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Effects of cryoprotectant and plunging temperature in liquid nitrogen on the in vitro and in vivo development of murine morulae Braz. J. Vet. Res. Anim. Sci.
PANTANO,Thaís; MELLO,Marco Roberto Bourg de; GARCIA,José Fernando; HO,Linda Lee; VISINTIN,José Antonio.
The effects of plunging temperature in liquid nitrogen and cryoprotectant dilution methods were evaluated for compacted mouse morulae frozen in 1.5 M ethylene-glycol (E), 1.5M propylene-glycol (P) or 1.4M glycerol (G). Morulae were equilibrated for 10 minutes in cryoprotectant solution and loaded into 0.25 ml straws with cryoprotectant solution in 3 columns (groups E1, P1, G1) or cryoprotectant in the center and PBS in the lateral columns (E2, P2). Straws were cooled at 0.5ºC/min to -25 or -30ºC and plunged into liquid nitrogen. Straws were thawed in water at 22ºC for 20 seconds. Cryoprotectant was diluted in 3 steps for group G1 and in one step for groups E1 and P1 (direct transfer to PBS + 10% FCS) and E2 and P2 (shaken to mix the 3 columns before...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Embryos; Cryopreservation; Glycerol; Ethylene glycol; Propanediols.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962000000300012
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