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Carnegie Stage   Figure

Intact ovum photographed by phase microscopy

Intact ovum photographed by phase microscopy

Intact ovum photographed by phase microscopy. Note the prominence of the zona pellucida with its adherent cells and debris. The larger polar body is clearly seen at the lower margin of the cleavage plane. The nulcei are less clear than in figure 2.

Fig. 1. Hertig et al., 1954


Keywords: cleavage plane, nucleus, polar body, zona pellucida


Source: The Virtual Human Embryo.