His work opened the way to intracytoplasmic sperm injection（ICSI），in which a single sperm is injected directly into the egg cell.
His work opened the way to intracytoplasmic sperm injection（ICSI），in which a single sperm is injected directly into the egg cell.
运用该技术，可以把精子放置在卵子或卵母细胞的屏障清澈层下。