Figure 8From: Pronuclear morphology evaluation for fresh in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) cycles: a systematic review Zygote scoring system of Montag et al. [16]. This classification subdivided the zygotes with a “normal” pattern 0 in two further different patterns according to NPBs number and distribution: pattern 0A (A) (>7 equally distributed NPBs) and pattern 0B (≤ polarized NPBs) (B).Back to article page