First birth following assisted sperm fusion insemination using sperm bound to zona pellucida

摘要

Pressing the sperm onto the unfertilized oocyte membrane (representative images). a Pressing the motile sperm head onto the oocyte membrane for 30 s. b Adhesion of the sperm onto the oocyte membrane after withdrawal of the injection needle. Red arrows: the motile sperm collected from the zona pellucida