Skip to main content
Figure 15 | Journal of Ovarian Research

Figure 15

From: Pronuclear morphology evaluation for fresh in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) cycles: a systematic review

Figure 15

Zygote scoring system of James et al. [30]. Zygotes were grounded in scores from 1 to 4: score 1, zygotes with equal numbers of nucleoli that are aligned at the furrow between the PN (A); score 2, zygotes with equal numbers of nucleoli that are not aligned at the furrow (B); score 3, zygotes with marked differences in size and/or number of nucleoli with nucleoli not aligned (C and D); and score 4, zygotes with different size PN, non central PN or PN that were not in contact with each other (E and F).

Back to article page