Objective: To investigate the relationship of zona pellucida thickness (ZPT) / zona pellucida thickness variation (ZPTV) of human embryos and clinical pregnancy outcome following in vitro fertilization treatment.

• 目的 探讨透明带厚度 (ZPT)及透明带厚度变量 (ZPTV)与体外受精 胚胎移植 (IVF ET)妊娠结局的关系。