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Syngamy just prior to cleavage

LM of a stage 1c embryo in syngamy just prior to cleavage, 32 hours post-insemination (original magnification x300). The chromosomes are visible in the agranular region in the central cytoplasm. Some are in pairs. Small vacuoles are present in the cytoplasm.

From: Sathananthan and Trounson, 1985. Reproduced with permission of the publisher, John Wiley & Sons.

Keywords: chromosomes, cleavage, cytoplasm, stage 1c embryo, syngamy, zygote

Source: The Virtual Human Embryo.