Fig. 32. TEM of the central cavity (CC) of a stage 2, 8-cell embryo in vitro, 72 hours post-insemination, (original magnification x7,000). Four blastomeres surround the cavity which contains small cytoplasmic fragments, microvilli and cellular debris.

M, mitochondria; V, vacuole.

(From: Sathananthan, Trounson, and Wood, 1986)

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