Figure 10From: Pronuclear morphology evaluation for fresh in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) cycles: a systematic review Zygote scoring system of Guerif et al. [35]. This classification grouped the patterns 1–5 as defined by Tesarik and Greco [51] into a single class called “non-pattern 0” (A-E). Zygotes with “non-pattern 0” were considered abnormal zygotes in opposition to “pattern 0” zygotes (normal zygotes) (F and G).Back to article page