... [24],which, in turn, protects the bovine oocytes from oxidativedamage. Addition of β-ME to chemical defined maturation medium also increased the percentage of ovine oocytes completing nuclear maturation ... cysteineand cystine. Theriogenology 2000, 53, 761-771.27.Matos DG, Gasparrini B, pasqualini SR, Thompson JG.Effect of glutathione synthesis stimulation during in vitro maturation of ovine oocytes ... classification in canine oocytes stained after in vitro maturation Classification DescriptionGerminal vesicle (GV) Germinal vesicle (nuclear envelope) still intact; scattered chromatinGerminal vesicle...