Article
Fertilization and early embryology: Prolonged sperm-oocyte exposure and high sperm concentration affect human embryo viability and pregnancy rate
1 Nov 1996
Abstract excerpt
A reduced time interval of oocyte exposure to spermatozoa was investigated to assess whether it could enhance oocyte development and improve embryo viability, especially in cases of male factor infertility. A total of 167 patients were included in a prospective randomized study. They were randomly allocated to two major study groups, A (n = 85) and B (control group; n = 82). The oocytes from group A patients were...
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