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A comparative study in direct cryopreservative efficacy between Triladly® and EDTA saline glucose 10% glycerol cryopreservative media for human and non-human infective trypanosomes OAK
Ndungu, K; Gitonga, P; Mulinge, M; Kangethe, J; Kibugu, J. K; Munga, L. K; Maina, N; Kagira, J. M; Ngae, G. N; Murilla, G.
The efficacy of Triladyl®, a commercial cryomedium for bull semen, in the cryopreservation of both human and animal infective trypanosomes as compared to EDTA Saline Glucose (ESG) 10% glycerol was evaluated in the current study. Cryopreserved Trypanosoma brucei rhodesiense, T. evansi, T. b. brucei and T. congolense were first propagated in irradiated mice. At the peak of parasitemia, parasites were harvested by cardiac puncture and 106,105,104103,102 and 10 dilutions made using whole blood bled from clean mice. These dilutions were divided into two equal portions of 0.5 ml each and cryopreserved in both ESG 10% glycerol and neat Triladly®. The procedure was also repeated with T. congolense and T. vivax species of trypanosomes directly isolated from...
Palavras-chave: Trypanosoma; Cryopreservation.
Ano: 2009 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2500
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Acrosin release and acrosin activity during incubation in capacitating media using fresh and frozen-thawed dog sperm Biol. Res.
de los Reyes,Mónica; Palomino,Jaime; Martínez,Víctor; Aretio,Carolina; Gutiérrez,Michel.
We evaluated the effect of time and temperature on acrosin release from the acrosomal cap and the activity of this enzyme during in vitro capacitation in fresh and frozen/thawed dog sperm. Sperm-rich fractions of six ejaculates from three dogs were processed as fresh and frozen samples. Each sperm sample was incubated in canine capacitation medium (CCM) for 0, 1, 2 and 3 h at 20°C and at 37°C. After incubation, the samples were assessed by the indirect immunofluorescent staining technique. The probability of having unlabeled sperm (PUS), indicating acrosin loss, was modelled by a binomial distribution using logistic regression. There was a linear relationship between PUS and time at both temperatures (p<0.001); however, a major percentage of unlabeled...
Tipo: Journal article Palavras-chave: Acrosin; Capacitation; Dog sperm; Cryopreservation.
Ano: 2011 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602011000200005
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Advantages and Applications of Cryopreservation in Fisheries Science BABT
Tsai,S.; Lin,C..
Cryopreservation is a long-term storage technique to preserve the biological material without deterioration for extended period of time at least several thousands of years. The ability to preserve and store both maternal and paternal gametes provides a reliable source of fish genetic material for scientific and aquaculture purposes as well as for conservation of biodiversity. Successful cryopreservation of fish sperm have been achieved for more than 200 fish species and many fish species have been adequated for the purpose of cryobanking. Cryopreservation of fish embryo is not viable, mainly because of the same limitations as in fish oocytes, i.e., high chilling sensitivity and low membrane permeability. However, cryopreservation of isolated embryonic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cryopreservation; Sperm; Embryo; Oocyte; Blastomere.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000300014
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Artificial Insemination with Canine Spermatozoa Frozen in a Skim Milk/Glucose-Based Extender OAK
ABE, Yasuyuki; LEE, Dong-Soo; SANO, Hikaru; AKIYAMA, Koji; YANAGIMOTO-UETA, Yoshiko; ASANO, Tomoyoshi; SUWA, Yoshinori; SUZUKI, Hiroshi; 鈴木, 宏志.
Due to the recent outbreak of avian influenza, transportation of frozen canine semen with egg yolk has been sharply restricted. Thus, there is urgent need to develop a novel egg yolk-free extender for freezing canine spermatozoa. In the present study, the effect of using skim milk/glucose (SG)-based extender without egg yolk on the motility and fertilizing capacity of canine spermatozoa frozen-thawed in the presence of glycerol was examined. There was a tendency for the proportion of motile spermatozoa exposed to SG-based extender for 3 h to be higher than that exposed for 1 h, but the difference was not significant. The motility and other viability parameters of canine spermatozoa after thawing were similar to those obtained with an egg yolk-based...
Palavras-chave: Canine; Cryopreservation; Skim milk/glucose-based extender; Spermatozoa.
Ano: 2008 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3030
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Assessment of the interaction between straw size and thawing rate and its impact on in vitro quality of post-thaw goat semen R. Bras. Zootec.
Bezerra,Francisco Silvestre Brilhante; Castelo,Thibério de Souza; Santos,Érika Aparecida Araújo dos; Dantas,Tiago da Costa; Simão,Bruno Rodrigo; Silva,Alexandre Rodrigues.
The objective of this study was to analyze interactions between different straw sizes and thawing rates on the post-thaw goat semen parameters. Twenty-one ejaculates (seven per animal) were collected from three stud bucks by using an artificial vagina. After evaluation, the semen was extended in Tris-egg yolk-glycerol and packed in 0.25 and 0.50 mL straws, followed by storage in liquid nitrogen. Thawing was performed using two different rates: 37 ºC/1 min and 55 ºC/7 s. The interaction between the 0.5-mL straw and the thawing rate of 55 ºC/7 s promoted higher progressive motility. When the effect of straws alone was analyzed, it was verified that the use of the 0.50 mL straw promoted better conservation than the 0.25 mL one for progressive motility and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Capra hircus; Cryopreservation; Semen processing.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300016
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Banco de sementes de café em criopreservação: experiência inédita no Brasil. Infoteca-e
EIRA, M. T. S.; REIS, R. B.; RIBEIRO, F. N. S.; RIBEIRO, V. S..
bitstream/CENARGEN/26622/1/ct042.pdf
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Banco; Coffee; Bank.; Café; Armazenamento; Criopreservação; Germinação; Germoplasma.; Coffea; Germination; Germplasm.; Cryopreservation.
Ano: 2005 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/187030
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(+)-Catechin and (-)-epigallocatechin gallate: are these promising antioxidant therapies for frozen goat semen? Arq. Bras. Med. Vet. Zootec.
Silva,E.C.B.; Arruda,L.C.P.; Vieira,J.I.T.; Soares,P.C.; Guerra,M.M.P..
ABSTRACT The aim of this study was to evaluate the effects of different concentrations of (+)-catechin or (-)-epigallocatechin gallate (EGCG) on goat semen freezability. Poolsof semen were processed (Experiment 1: 0, 15, 25, 50, 75, or 100µM (+)-catechin; Experiment 2: 0, 15, 25, 50, 75, or 100µM EGCG) and frozen. After thawing, the samples were evaluated for kinematics, plasma membrane (PMi) and acrosome integrity, morphology, and oxidative stress, at 0 and 1h. In Experiment 1, at 0h, VSL and VAP were greater (P<0.05) with 15µM than with 50 and 100; WOB was lower (P<0.05) with 100µM than with 0, 15, and 25; and BCF was higher (P<0.05) with 75 and 100µM than with 0. In turn, in Experiment 2, progressive motility was higher (P<0.05) with0 and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidants; Cryopreservation; Flavonoids; Oxidative stress; Semen.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000200521
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Continuous in vitro Cultivation of Babesia ovata OAK
Igarashi, Ikuo; Avarzed, Avgaandorjiin; Tanaka, Tetsuya; Inoue, Noboru; Ito, Masanari; Omata, Yoshitaka; Saito, Atsushi; Suzuki, Naoyoshi.
Palavras-chave: Babesia ovata; In vitro culture; Low oxygen atmosphere; Cryopreservation.
Ano: 1994 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/212
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Cooling of curimba (Prochilodus lineatus) embryos using different concentrations of dimethyl sulphoxide and methanol R. Bras. Zootec.
Machado,Gilmara Junqueira; Murgas,Luis David Solis; Palhares,Priscila Cotta; Assis,Isadora de Lima; Castro,Tássia Flávia Dias.
ABSTRACT This study aimed to evaluate the effect of using different concentrations (5, 7.5, 10, and 12.5%) of two permeating cryoprotectants, dimethyl sulphoxide (DMSO) and methanol, on Prochilodus lineatus embryos while being subjected to cooling for 2, 4, 6, and 8 h at 4 °C. We analyzed the hatching rate, viable larvae, and counts of hatched and spoiled eggs and those that did not complete their development after cooling. We observed a significant interaction among variables, permeable cryoprotectant concentration, and cooling time, having the increase of these factors caused a reduction in hatching rate. The curimba embryos showed a higher sensitivity to cold at a temperature of 4 °C for 6 and 8 h, directly influencing the production of viable larvae....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture; Biotechnology; Cryopreservation; Eggs; Fish; Larvae.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100155
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Cooling of ejaculated and epididymal stallion sperm Arq. Bras. Med. Vet. Zootec.
Monteiro,G.A.; Guasti,P.N.; Hartwig,F.P.; Dellaqua Jr.,J.A.; Alvarenga,M.A.; Papa,F.O..
After a serious injury or sudden death, epididymis cauda sperm recovery and cryopreservation may present as the last opportunity to obtain genetic material from a valuable stallion. This study evaluated the viability of cooled equine sperm collected by three different methods: sperm of ejaculated (G1), sperm recovered from the epididymal cauda immediately after orchiectomy (G2) and sperm recovered from the epididymal cauda after storage for 24 hours at 5°C (G3). To obtain G1 sperm, two ejaculates were collected. After 1 week, all stallions underwent a bilateral orchiectomy, and one of the removed epididymides was flushed to obtain G2 sperm. The contralateral epididymis was stored at 5°C for 24 hours before being flushed to obtain G3 sperm. The sperm...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Horse epididymal spermatozoa; Cryopreservation; Stallion; Sperm viability; Seminal plasma.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352013000300010
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Cryopreservation of an avian spirochete strain in liquid nitrogen Arq. Bras. Med. Vet. Zootec.
Labruna,M.B.; Resende,J.S.; Martins,N.R.S.; Jorge,M.A..
Soros de aves experimentalmente infectadas, contendo espiroquetas viáveis, foram submetidos a dois procedimentos antes da criopreservação: glicerol na diluição de 1/2 (v/v), designado como soro com glicerol a 50% (GS), e dimetilsulfóxido na proporção de 1/10 (v/v), designado como soro com DMSO a 10% (DS). Após 15 meses de estocagem em nitrogênio líquido, amostras dos tratamentos GS e DS foram descongeladas e suas infectividades foram testadas em frangos susceptíveis. Apesar de ambos os procedimentos terem mantidos a infectividade da bactéria, DMSO a 10% no soro de frango apresentou-se mais satisfatório como criopreservante.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Chicken; Spirochete; Borrelia anserina; Cryopreservation.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09351999000600008
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Cryopreservation of Crassostrea gigas vesicular cells: Viability and metabolic activity ArchiMer
Hanquet, Anne-caroline; Kellner, K; Heude, C; Naimi, Amine; Mathieu, M; Poncet, J.m..
Cryopreservation is widely used for long-term conservation of various tissues, embryos or gametes. However, few studies have described cryopreservation of invertebrate primary cell cultures and more particularly of marine invertebrate somatic cells. This technique would however be of great interest to facilitate the study of various metabolic processes which vary seasonally. The aim of the present study was to develop a protocol for cryopreservation of Crassostrea gigas vesicular cells. Different parameters were adjusted to improve recovery of cells after freezing. The most efficient cryoprotectant agent was a mix of Me2SO, glycerol, and ethylene glycol (4% each). The optimal cooling rate was -1 degrees C min(-1) down to -70 degrees C before transfer into...
Tipo: Text Palavras-chave: Glycogen metabolism; Vesicular cells; Cryopreservation; Mollusc; Oyster; Crassostrea gigas.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-1938.pdf
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Cryopreservation of mouse morulae in glycerol, sucrose and honeybee royal jelly Braz. J. Vet. Res. Anim. Sci.
VISINTIN,José Antônio; GARCIA,José Fernando; PANTANO,Thais; D’ÁVILA ASSUMPÇÃO,Mayra Elena Ortiz.
Compacted mouse morulae were frozen at 0.3ºC/min. or 0.5ºC/min. from -6ºC to -24ºC or -32ºC in 10% of glycerol plus different sucrose concentrations with or without 0.1% of honeybee royal jelly. Embryos were thawed in water bath at 22ºC for 20 seconds and cryoprotectant dilution was done in three steps. Embryos were cultured in Whitten’s medium for 24, 48 and 72 hours at 37ºC, 5% of CO2 and 100% of humidity. The in vitro development ranged from 56.6% to 100% after 72 hours. Expanded blastocysts were transferred to pseudopregnant recipients on the third day of the estrous cycle. Viable fetuses rates for embryos frozen to -24 or -32ºC at 0.3ºC/minute in 10% glycerol + 10% sucrose, 10% glycerol + 10% sucrose + 0.1% honeybee royal jelly, 10% glycerol + 0.1%...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mice; Embryo; Cryopreservation; Sucrose; Royal jelly.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962000000400009
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Cryopreservation of mouse morulae through different methods: slow-freezing, vitrification and quick-freezing Braz. J. Vet. Res. Anim. Sci.
MELLO,Marco Roberto Bourg de; QUEIROZ,Vinícius Seixas; LIMA,Alessandra Sobreira de; TAVARES,Liliam Mara Trevisam; ASSUMPÇÃO,Mayra Elena Ortiz D'Avila; WHEELER,Mathew B.; VISINTIN,José Antonio.
The in vitro and in vivo development of mouse morulae after cryopreservation through different methods was examined. The slow-freezing involved an equilibration in 1.5M ethylene glycol (EG) and cooled at 0.5; 0.7; 1.0 or 1.2ºC/minute. The vitrification involved a 3 minutes equilibration in 20% EG and 60 seconds in solution containing 40% EG, 18% ficoll and 10.26% sucrose. The quick-freezing involved an equilibration in 3M EG + 0.3M sucrose for 5 minutes and 2 minutes in nitrogen vapor. In all three methods the straws were thawed in air for 10 seconds and in water at 25ºC for 20 seconds and the embryos cultured in vitro for 72 hours to estimate blastocyst rate. To assess viability in vivo, frozen morulae as well as fresh embryos were transferred into...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cryopreservation; Embryo; Mouse.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962001000400003
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Cryopreservation of sea bass (Dicentrarchus labrax) spermatozoa in experimental and production simulating conditions ArchiMer
Fauvel, Christian; Suquet, Marc; Dreanno, Catherine; Zonno, Vincenzo; Menu, Bruno.
A sperm cryopreservation protocol adapted from turbot, was tested on sea bass using either 250-mu L straws or 1.5-mL cryovials. A dilution to 1/3 in Mounib's extender and a cooling rate of 65 degrees C.min(-1) allowed frozen sperm to recover an initial motility similar to that of fresh sperm at thawing; however, significant differences in motility (P < 0.001, n = 10 fish semen) were observed at further post-activation times, the motility decrease being faster in thawed sperm. At the experimental scale, triplicate inseminations of 2-mL aliquots (approximately 2 000 eggs) showed a significant fertility decay of thawed sperm compared to that of fresh sperm (P < 0.01, n = 12 fish semen) when a discriminating 35.10(3) spermatozoa to egg ratio was applied....
Tipo: Text Palavras-chave: Dicentrarchus labrax; Sea bass; Cryobank; Insemination; Spermatozoa; Cryopreservation; Dicentrarchus labrax; Loup; Banque de sperme; Insémination; Cryoconservation; Cryoconservation.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/1998/publication-866.pdf
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Cryopreservation of semen from functional sex-reversed genotypic females of the rainbow trout, Oncorhynchus mykiss BABT
Ninhaus-Silveira,Alexandre; Foresti,Fausto; Tabata,Yara Aiko; Rigolino,Marcos Guilherme; Veríssimo-Silveira,Rosicleire.
Cryopreservation of semen from sex-reversed females of rainbow trout aims at rationalizing the production of stocks composed by 100% females. Semen from normal males (M) and two types of genotypic females (R and G), sex-reversed by the oral administration of 17alpha-methyltestosterone, were used. R was obtained by the fertilization of normal eggs with semen of sex-reversed females while G via gynogenetic reproduction. Semen was diluted in an extender solution (glucose 5,4 g, egg yolk 10 ml, dimetil sulfoxide 10 ml, water 80 ml) at 1:3 ratio (semen/extender), stored in straws of 0.5 ml and freezed in a dry container Cryopac CP-65, at -180ºC. Thawing was performed with water at 70ºC for 3 seconds. There were no significant fertilization rate differences...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Oncorhynchus mykiss; Cryopreservation; Sex reversal; Gynogenesis; Semen.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000100009
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Cryopreservation of sperm in marine fish ArchiMer
Suquet, Marc; Dreanno, Catherine; Fauvel, Christian; Cosson, J; Billard, R.
Since the first work of Blaxter in 1953, fish sperm cryopreservation has been attempted on about 30 marine species. The present paper reviews the techniques used and the results published in these species. Particular attention is paid to the handling procedure of sperm before freezing, the problems of semen ageing and semen contamination with urine. The quality of frozen-thawed semen was evaluated using previously standardized biotests, such as a two-step motility activation technique adapted for the different species and fertilization assays using a discriminating insemination technique. Most extenders used in marine fish are saline or sugar solutions. From the investigated cryoprotectants, dimethyl sulphoxide (DMSO) generally leads to the best results....
Tipo: Text Palavras-chave: DMSO; Insemination; Fertilization; Cryopreservation; Fish sperm.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/2000/publication-611.pdf
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Cultivation of Pichia pastoris carrying the scFv anti LDL (-) antibody fragment. Effect of preculture carbon source BJM
Arias,Cesar Andres Diaz; Marques,Daniela de Araujo Viana; Malpiedi,Luciana Pellegrini; Maranhão,Andrea Queiroz; Parra,Dulcineia Abdalla Saes; Converti,Attilio; Pessoa Junior,Adalberto.
Abstract Antibodies and antibody fragments are nowadays among the most important biotechnological products, and Pichia pastoris is one of the most important vectors to produce them as well as other recombinant proteins. The conditions to effectively cultivate a P. pastoris strain previously genetically modified to produce the single-chain variable fragment anti low density lipoprotein (-) under the control of the alcohol oxidase promoter have been investigated in this study. In particular, it was evaluated if, and eventually how, the carbon source (glucose or glycerol) used in the preculture preceding cryopreservation in 20% glycerol influences both cell and antibody fragment productions either in flasks or in bioreactor. Although in flasks the volumetric...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pichia pastoris; ScFv antibody fragment; Cryopreservation; Expression; Carbon source.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000300419
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Date palm micropropagation: Advances and applications Ciência e Agrotecnologia
Al-Khayri,Jameel Mohammed; Naik,Poornananda Madhava.
ABSTRACT Date palm (Phoenix dactylifera L.) is a fruit tree resilient to adverse climatic conditions predominating in hot arid regions of the Middle East and North Africa. The date fruit contains numerous chemical components that possess high nutritional and medicinal values. Traditional propagation by offshoots is inefficient to satisfy current demands for date palm trees. Alternatively, micropropagation provides an efficient means for large-scale propagation of date palm cultivars. Both somatic embryogenesis and organogenesis, either directly or indirectly though the callus phase, have been demonstrated in date palm in vitro regeneration. Culture initiation commonly utilizes shoot-tip explants isolated from young offshoots. Recently, the immature...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cryopreservation; Somatic embryogenesis; Somaclonal variation; Organogenesis; Molecular marker..
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542017000400347
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Development of single tubing-type canister for cryo-storage of bull semen and their effect on sperm motility and viability BABT
Ismail,Mohd Iswadi; Osman,Khairul; Ibrahim,Siti Fatimah; Jaafar,Farah Hanan Fatihah; Ghani,Nur Azianie Abd; Zainalabidin,Fazly Ann; Othman,Abas Mazni.
The objective of this study was to evaluate the potential of using single tubing-type canister on sperm quality. Semen was collected from the Bali cattle bull by electroejaculation technique and was cryopreserved in liquid nitrogen using slow freezing cryopreservation method. Two type of canister volume was used in this study; commercial canister (342.25π x 278 mm²) and single tubing-type canister (4π x 90 mm²). Makler counting chamber and computer assisted sperm analyzer (CASA) were used to evaluate the sperm motility and viability of post-thaw sperm. Results showed that the bull sperm motility and viability at the bottom of tubing-type canister was statistically higher and significant as compared to the commercial canister (p<0.05). Significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cryopreservation; Sperm; Canister; Motility; Viability.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132014000200006
Registros recuperados: 69
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