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MORPHOMETRICAL AND STEREOLOGICAL ANALYSIS OF THE SUPERIOR CERVICAL GANGLION OF Rattus norvegicus SUBMITTED TO CHRONIC TREATMENT WITH CORTISOL International Journal of Morphology
Cortez,C. M.; Costa,W. S.; Babinski,M. A.; Chagas,M. A..
The present work investigates the corticoid action on the growth of the superior cervical ganglion of the rat and describes the cortisol effect during early stages of development. The study was based on morphometric and stereological analysis of the perikarya. Eight rats were treated intraperitoneally with cortisol (1mg/Kg/day) during 36 days. Treatment was initiated in the 8th day after birth and was withdrawn one day before the sacrifice. There was a significant difference (<=P0,05) for the neural mean diameter between the control group (16.78 ± 1.11mm) and treated animals (15.84 ±0.99mm). The decrease of perikarya neuronal diameter was also demonstrated by stereological methods. Morphometrical findings may suggest alterations in superior cervical...
Tipo: Journal article Palavras-chave: Morphometry; Stereology; Glucocorticoid; Sympathetic ganglion; Rat.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000300006
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EDITORIAL International Journal of Morphology
Tipo: Journal article
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000100001
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EFFECTS OF PYRAZINAMIDE ON PREGNANT ALBINO RATS International Journal of Morphology
Pascale Quintino,Marisa; Simões,Manuel de Jesus; Uchiyama Nakamura,Mary; Martins Oliveira-Filho,Ricardo; Espiridião,Silvia; Kulay Júnior,Luiz.
Although being used for years in the treatment of tuberculosis, no data are available in the literature on the safety of pyrazinamide during pregnancy. Accordingly, we aimed to make a first approach to this problem by evaluating the effects of this drug administered during the entire pregnancy of albino rats. Fourty female, EPM-1 Wistar albino rats of about 250 g b.w. were used. Upon conception (day zero of pregnancy) the animals were randomly divided in 4 groups of 10 rats each and labeled as follows. Controls (C), animals treated with the drug vehicle (destilled water); experimental groups (E1, E2 and E3), animals treated with 35, 105 or 315 mg/kg b.w. pyrazinamide by gavage (oral route) once daily up to the term (20th day of pregnancy). Drug or vehicle...
Tipo: Journal article Palavras-chave: Pyrazinamide; Toxicology; Rat; Pregnancy.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000400007
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EVALUACIÓN DEL APRENDIZAJE PRÁCTICO DE LA ANATOMÍA HUMANA PARA ODONTOLOGÍA EN LA UNIVERSIDAD DE ANTOFAGASTA, CHILE International Journal of Morphology
García-Hernández,Fernando.
El laboratorio de anatomía cumple el rol de transformar conceptos teóricos en algo concreto. Es una actividad única, ineludible, irreemplazable, irrecuperable e indispensable para lograr objetivos educacionales. El cadáver ha sido el principal método de aprendizaje; sin embargo, las dificultades para obtener material cadavérico ha estimulado el uso de nuevos medios didácticos. Desde 1997, año en que se inicia la docencia anatómica para Odontología en la Universidad de Antofagasta, hemos buscado el mejor método para comprobar el logro de objetivos, realizando evaluaciones al final del laboratorio empleando material cadavérico o, en su reemplazo, láminas y dibujos que sirvieran para identificar estructuras. La investigación docente plantea la hipótesis de...
Tipo: Journal article Palavras-chave: Anatomía; Odontología; Evaluación.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000100007
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SOMATOTIPO E ÍNDICE DE MASA CORPORAL EN UNA MUESTRA DE ADOLESCENTES DE AMBOS SEXOS DE LA CIUDAD DE TEMUCO, CHILE International Journal of Morphology
Silva,H.; Bruneau,J. C.; Reyno,H. P.; Bucarey,S..
La obesidad en el mundo se ha convertido en un problema de salud pública, no escapando a esta situación los adolescentes de Chile. Los estudios de la composición corporal, estado nutricional e índice de masa corporal (IMC) son los parámetros recomendados por la OMS, para determinar el estado nutricional del Hmbre. Realizamos este estudio para conocer la real situación de los adolescentes de Temuco, . Evaluamos 208 sujetos de ambos sexos, entre 10 y 13 años de edad, de un colegio privado de la ciudad de Temuco, Novena Región Chile. Los sujetos fueron evaluados en el Centro de Alto Rendimiento del Instituto Nacional del Deporte. Para obtener el somatotipo utilizamos el método antropométrico de Heath &amp; Carter, efectuándose la clasificación del IMC de...
Tipo: Journal article Palavras-chave: Somatotipo; Antropometría; Índice de masa corporal.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000400009
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ULTRASTRUCTURAL ANALYSIS OF PINEALECTOMY AND LACK OF LIGHT INFLUENCE OVER COLLAGEN IN THE ENDOMETRIUM OF RATS International Journal of Morphology
Pinto de Medeiros,Juliana; Wanderley Teixeira,Valéria; Aguiar Coelho Teixeira,Álvaro; Baratella Evêncio,Liriane; Evêncio Neto,Joaquim.
Some studies have shown that pinealectomized female rats present a large concentration of collagen fibers in the endometrium. The lack of light results in morphologic alterations in the uterine lamina propria and in the muscular layer, reducing thus the uterine weight. Therefore, this work aimed to analyze ultra-structurally the influence of melatonin in the remodeling of the collagen in the endometrium, in the estrus phase, in pinealectomized adult rats or submitted to lack of light. The experimental groups: I- sham-pinealectomized maintained in a clear/dark cycle 12/12 hours, during three months; II- pinealectomized rats maintained in a clear/dark cycle 12/12 hours, for three months; III- normal rats maintained in clear/dark cycle 12/12 hours for three...
Tipo: Journal article Palavras-chave: Melatonin; Endometrium; Pinealectomy; Collagen.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000300008
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HIGH RESOLUTION SEM OF INTRINSIC MUSCLE FIBERS OF ANTERIOR THIRD RET'S TONGUE International Journal of Morphology
Motoyama,Aracy A.; Watanabe,Ii-sei; Ogawa,Koichi.
The characteristics of intrinsic muscle fibers in the anterior third of the adult rat tongue were studied employing light microscopy, SEM and high-resolution SEM (HRSEM) methods. For light microscopy, specimens were fixed in Bouin's solution and embedded in paraffin. In order to identify the muscle fibers and bundles of collagen fibers, frontal sections were stained with hematoxylin-eosin, azo-carmin and picro-sirius. The results showed that muscle fibers near the lamina propria are fixed with connective tissue, constituting several groups. The bundles of muscle fibers are arranged in longitudinal, vertical and transversal directions. For SEM, specimens were fixed in modified Karnovsky solution and freeze-fractured in liquid nitrogen revealed the collagen...
Tipo: Journal article Palavras-chave: Muscle fibers; Tongue; Rat; HRSEM; Mitochondria; Basement membrane.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000400006
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ANATOMICAL ASPECTS OF THE PROXIMAL FEMUR OF ADULT BRAZILIANS International Journal of Morphology
Silva,Valter José da; Oda,Juliano Yasuo; Mello Gonçales Sant'Ana,Débora de.
This study had the purpose of enlarging the data on the Brazilian people, providing anatomic fundamentals that allow a better comprehension of clinical and pathological states involving the hip joint. Sixty-six human femurs, 33 right and 33 left, were used, coming from the Laboratory of Human Anatomy of the Universidade Paranaense &shy; UNIPAR. All the bones had adult characteristics, but no sex, race or age identifications. None of them presented visible abnormalities or signs of arthrosis. The following morphometric measures were made: angle of the femur neck, circumference of the femur head and neck, length of the femur neck and of the whole bone. The comparative analysis of the angle of the femur neck between the right and left sides of adults...
Tipo: Journal article Palavras-chave: Femur; Anatomy.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000400008
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MORPHOLOGICAL STUDY OF THE TONGUE OF BUDGERIGAR (Melopsittacus undulatus) International Journal of Morphology
Martinez,M.; Stefanini,M. A.; Martinez,F. E.; Guida,H. L.; Pinheiro,P. F. F.; Almeida,C. C. D.; Segatelli,T. M..
The tongue of the budgerigar was analyzed macroscopically and by scanning electron microscopy with conventional and NaoH maceration techniques. Macroscopic analysis showed a median sulcus along the medium to the posterior regions. Transverse sulcus were also observed. The dorsum of the tongue showed a relatively smooth surface lined by keratinized stratified squamous epithelium. Lingual papillae were not detect on the anterior and medium regions, only at the root of the tongue. These structures were curved and inclined posteriorly. Near to the larynges aditus numerous projections like lingual papillae were noted. The anterior and medium regions showed connective tissue protrusions with longitudinal and transversal arrangement. The surface of the...
Tipo: Journal article Palavras-chave: Tongue; Epithelium; Connective Tissue; Bird; SEM.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000200004
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COMPENSACIÓN: UN NUEVO CONCEPTO RELACIONADO CON LA LATERALIDAD CEREBRAL. SU APLICACIÓN A REGIONES DEL LÓBULO FRONTAL, INCLUIDA EL ÁREA MOTORA DEL LENGUAJE (DE BROCA) International Journal of Morphology
Merlo,Alicia; Albanese,Eduardo; Gómez,Elena; Miño,Jorge; Ingratta,Adriana; Mascitti,Tomás; Albanese,Alfonso M.
: Cuando se determina la asimetría de una estructura bilateral formada por subregiones asimétricas con lateralidades opuestas, queda enmascarada (compensada), total o parcialmente, la existencia de las diferencias interhemisféricas de tales subregiones. Para cuantificar esta realidad, hemos establecido un nuevo parámetro: la compensación. El objetivo del presente trabajo, realizado en cerebros humanos postmortem, está dirigido a determinar los porcentajes de compensación, de asimetría de peso y de superficie cortical, de tres regiones cerebrales pertenecientes al lóbulo frontal: 1. El área de motora del lenguaje (de Broca). 2. La porción anterior del giro frontal inferior. 3. El giro frontal inferior en su totalidad. Para valores de peso y de superficie...
Tipo: Journal article Palavras-chave: Área de Broca; Giro frontal inferior; Compensación; Asimetría cerebral.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000200003
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ANÁLISIS DE LA ESTABILIDAD ORTOSTÁTICA CRÁNEOCERVICAL EN ADULTOS JÓVENES MAPUCHES International Journal of Morphology
Henríquez,Jorge; Fuentes,Ramón; Sandoval,Paulo; Muñoz,Alejandra.
En la función del sistema cráneomandibular se reconoce como un factor importante la postura de la cabeza sobre la columna cervical. La estabilidad ortostática del cráneo sobre la columna cervical permite un correcto funcionamiento de este sistema. En un estudio anatomorradiológico de casos, se evaluó la estabilidad ortostática cráneocervical de 45 adultos jóvenes de sexo masculino del grupo étnico mapuche. El análisis se realizó a través de telerradiografías, utilizando el cefalograma de Rocabado para evaluar la posición del triángulo hioídeo, el ángulo posteroinferior y el espacio C0-C1. La curvatura cervical se evaluó con la técnica de Penning. En el análisis del ángulo posteroinferior, la media fue de 91.2 ± 7.4 mm, encontrándose bajo el rango normal,...
Tipo: Journal article Palavras-chave: Alteraciones cráneocervicales; Columna cervical; Mapuche.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000200009
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EFFECTS OF LOW-DOSE PHENYTOIN ADMINISTRD TO RATS FETUSES ON DEVELOPING CHOROID PLEXUS. KARIOMETRIC STUDY International Journal of Morphology
Góes,M. J.; Azoubel,R..
The aim of the present study was to determine, by kariometric parameters, the influence of phenytoin, as teratogen, on the epithelial layer of choroid plexus in rats fetuses, using single daily dose ( 75 mg Kg-1 bd.wt.), during gestation GD9 to GD11, and lowest total dose used orally (225 mg Kg-1), to the best of our knowledge. In some of experimental studies in animals, the anticonvulsant drug phenytoin were administered in embriotoxic daily doses (100-1500 mg Kg-1 bd.wt.) increasing concentrations up to 20 times the human therapeutic plasma concentration. There is a significant lack of information regarding the embriotoxicity in pregnancy of these drug, phenytoin, in low doses. Phenytoin was administered in a single daily dose (75 mg Kg-1 bd.wt.) to...
Tipo: Journal article Palavras-chave: Kariometry; Phenytoin; Teratogenesis; Choroid plexus; Rat.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000400005
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BONE DEVELOPMENT OF BROILER CHICKENS FED DIETS WITH DIFFERENT AMINO ACID AND CALCIUM LEVELS DURING THE STARTER PHASE International Journal of Morphology
Soares da Silva Araújo,Cristiane; Martinez Baraldi Artoni,Silvana; Francelino Araújo,Lúcio; Jeferson Quirino Lousada,Mário; Mack Junqueira,Otto; Roque Rodriguez,Anita Isabel.
Two experiments were conducted in order to evaluate the effects of different dietary amino acid and calcium profiles on the bone characteristics of two chicken strains (Avian Farms and Cobb) during the starter phase. At the end of each experiment, 2 chickens of each replicate were sacrificed and their tibiae were collected for analysis of following bone characteristics: bone measurements (weight, length and thickness of the compact and spongy layers) and bone density (bone densitometry). A total of 540 birds were used in each experiment, divided into fully randomized blocks with a 3 x 2 factorial schemes, i. e., 3 amino acid profiles (methionine, lysine and threonine &shy; 100%, 125% and 150% of NRC recommendations, 1994) and 2 calcium levels (75% and...
Tipo: Journal article Palavras-chave: Amino acid; Bone density; Broiler chickens; Calcium.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000200001
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MICE TESTICULAR DAMAGE ELICITED BY MALATHION International Journal of Morphology
Bustos-Obregón,Eduardo; González-Hormazábal,Patricio.
Organophosphorous pesticides are a healh problem worldwide, mostly for agroworkers, which are around 2600 millions of person in the year 2001. Little is known about male reproductive damage elicited by these chemicals. The acute effects of malathion (single intraperitoneal injection), 1/12 the LD50 to mice were analyzed at 1, 8, 16, 35 and 40 days after injection, in terms of spermatogenic cell proliferation and apoptosis and of Sertoli cell compromise as revealed by immunocytochemical detection of CK-18 (cytokeratin). The micronuclei test was done to assess for genotoxic activity of the agropesticide. The results showed decreased germ cell number followed by compensatory spermatogonial proliferation by 16 days (as shown by thymidine-H3 testicular uptake),...
Tipo: Journal article Palavras-chave: Spermatogenesis; Organophosphorous agropesticides; Proliferation; Apoptosis.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000200010
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ENALAPRIL AND VERAPAMIL ATTENUATE THE AORTIC WALL REMODELING IN NITRIC OXIDE DEFICIENCY International Journal of Morphology
Meirelles Pereira,Leila Maria; Gonçalves Bezerra,Daniele; Mandarim-de-Lacerda,Carlos Alberto.
Forty mature male rats (Wistar strain) were maintained alive for 40 days, separated in four groups of five rats each (Control, L-NAME, L-NAME + Enalapril, L-NAME + Verapamil). Three aortic wall parameters were analyzed, as follows: the Q A(SMN) (the number of the tunica media smooth muscle nuclear profiles per area), the S V(lamellae) (surface density of the aortic lamellae), and the aortic wall thickness (AWT). Rats of the L-NAME group showed high blood pressure and cardiac hypertrophy. The AWT, the Q A(SMN) and the S V(lamellae) showed the same tendency among the groups. The increased AWT, or the reduced Q A(SMN) and the S V(lamellae) in l-NAME rats were not completely prevented by the administration of enalapril or verapamil. Hypertension causes the AWT...
Tipo: Journal article Palavras-chave: Nitric oxide; Aorta; Enalapril; Verapamil; Stereology.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000100002
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REVISIÓN DEL PLEXO VENOSO VERTEBRAL EN EL PERRO International Journal of Morphology
Gómez Jaramillo,Marcelo; Freeman,Larry.
El plexo venoso vertebral en el perro es una extensa red vascular que se extiende a lo largo de la columna vertebral. Este sistema venoso se divide en tres componentes que se comunican entre sí; el plexo venoso vertebral interno; el plexo venoso vertebral externo y las venas basivertebrales. Debido a la creciente importancia clínica de este plexo venoso en medicina veterinaria, así como en medicina humana, el propósito de este artículo es revisar la literatura en relación con la anatomía, principales aspectos fisiológicos y clínicos del plexo venoso vertebral canino
Tipo: Journal article Palavras-chave: Plexo venoso vertebral; Médula espinal; Venas; Canis familiaris.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000300009
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HISTOLOGY OF THE JAW DEFORMATION IN SALMON OF SOUTHERN CHILE International Journal of Morphology
Venegas,Felipe; Montiel,Enrique; Forno,Pablo; Rojas,Mariana.
In adult salmon of the sea centres in southern Chile, a jaw deformation (JD) has been identified. It affects the dental and hyomandibular bones, which bend ventrally up to 90&deg; of their normal position. The deformation affects also the dental articular bone. This pathology is related to weight loss and increased mortality of the salmons. It was empirically postulated that a probable cause for this anomaly was food from vegetal origin in the diet of the fishes (which are carnivores) Therefore, the present work aims at comparing the biostructure of jaw bone of salmons fed either with vegetal (soja and gluten) formulation or animal formulation, mostly fish powder. Fifty specimens were analyzed from Puerto Montt, 35 having JD and 15 normal control....
Tipo: Journal article Palavras-chave: Jaw; Jaw deformation; Histology; Salmon; Salmo salar.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000300005
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INERVACIÓN DEL MÚSCULO SEMITENDINOSO, BIOMETRÍA DE SUS RAMOS Y LOCALIZACIÓN DE SUS PUNTOS MOTORES International Journal of Morphology
Olave,E.; Braga,M. T. T..
La inervación motora de la musculatura esquelética es conocida, sin embargo, los padrones de distribución de esos ramos y los puntos motores son descritos de forma general. Con el propósito de aportar antecedentes anatómicos y biométricos sobre la inervación de la musculatura de los miembros, estudiamos las características de los ramos que inervan al músculo semitendinoso, considerando su origen respecto a la tuberosidad isquiática (TI), su longitud, la división de los ramos principales, como también la localización de los puntos motores respecto de la TI. La investigación se realizó en 28 miembros inferiores de 14 cadáveres formolizados, de individuos brasileños, adultos, de ambos sexos, de edades entre 25 y 65 años, pertenecientes a la disciplina de...
Tipo: Journal article Palavras-chave: Muslo; Músculo semitendinoso; Nervio isquiático; Puntos motores.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000200011
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TRANSCRIPTOS DE FUSIÓN DEL GEN BCR/ABL EN PACIENTES CON LEUCEMIA MIELOIDE CRÓNICA International Journal of Morphology
Artigas,Carmen Gloria; Melo,Angélica; Roa,Juan Carlos; Roa,Iván; Quijada,Ingrid; Vittini,Cecilia; Cabrera,María Elena; Risueño,Concepción.
La anormalidad citogenética más común en la leucemia mieloide crónica (LMC) es el cromosoma Philadelphia, producida por la t(9;22), cuya expresión molecular es el gen de fusión BCR-ABL, que codifica proteínas con actividad tirosinquinasa. Según el punto de ruptura de los genes BCR o ABL se produce una proteína de fusión de 210-kD(p210) o 190-kD(p190). La presencia de este gen de fusión en pacientes con LMC tiene implicancia diagnóstica. Con el propósito de detectar transcriptos de fusión del gen BCR/ABL en pacientes con leucemia mieloide crónica, procedentes de la IX Región de Chile, se estudiaron 14 muestras de sangre de 11 pacientes con LMC. A 2 de ellos, se les realizó seguimiento durante su tratamiento con Gleevec. Se aplicó la técnica de reacción en...
Tipo: Journal article Palavras-chave: BCR/ABL; RT-PCR; Leucemia mieloide crónica; Chile.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000300004
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EFECTOS DEL CADMIO EN LA MUCOSA YUGAL DE LA RATA DURANTE LA LACTANCIA. ESTUDIO MORFOLÓGICO E HISTOMÉTRICO International Journal of Morphology
Lara,Cristina Picoli; Watanabe,Ii-Sei; Lopes,Ruberval Armando; Sala,Miguel Angel; Picoli,Fábio.
El cadmio del aire, agua y alimentos tiene potencial de afectar la salud de las personas, principalmente de aquellas que viven en regiones industrializadas. El cadmio afecta la función placentaria, pudiendo atravesar la barrera trofoblástica y provocar alteraciones en el desarrollo del feto; puede, también, ser excretado por la leche. El organismo es particularmente susceptible a la exposición al cadmio en el periodo perinatal. Se estudió el efecto de la intoxicación por cadmio en el epitelio vestibular y suelo de la boca de ratas expuestas a niveles bajos de cadmio en el agua del bebedero, durante la lactancia. Las ratas recibieron agua ad libitum conteniendo 300 mg/l de CdCl2 durante los 21 días de lactancia. Los animales controles recibieron un volumen...
Tipo: Journal article Palavras-chave: Mucosa oral; Cadmio; Lactancia; Rata; Histopatología; Morfometría.
Ano: 2003 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022003000300002
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