We examined the effect of allogeneic and xenogeneic immune responses on the histopathological changes in aortic valve grafts and the influence of preservation techniques on these changes. Brown Norway rats and Syrian hamsters were used as allogeneic and concordant xenogeneic donors of aortic valve grafts, respectively. The allografts and xenografts were implanted heterotopically in the abdomina...

background: pentoxifylline (px) prevents camp breakdown by inhibiting the activity of the camp-phosphatase and presumably, stimulates sperm motion. incubation with px causes hyperactivation of sperm, an important step in achieving fertilization, and leads to changes in membranes associated with sperm capacitation. objective: the purpose of this study was to examine the effects of pentoxifylline...

The aim of this study was to evaluate the effect of different periods of ovary preservation at 25-30 °C for 5, 6, 7, 9, 12 and 24 h on recovery rate and oocyte categories of dromedary camel oocytes. Camel ovaries were collected from El-Bassatein slaughterhouse, Cairo. The collected ovaries were placed immediately after slaughtering into thermos in saline solution (0.9% NaCl) supplemented with a...