Fig. 23. TEM of virus like particles (VLP) in the intercellular space (ICS) between inner cell mass cells of a stage 3 embryo in vitro, 145-170 hours post-insemination (original magnification x18,000). The cytoplasm of the cells contains mitochondria (M), micropinocytotic vesicles (Mp), and polyribosomes (Pr).
(From: Lopata, Kohlman, and Kellow, 1982. Reproduced with permission of the publisher, John Wiley & Sons.)
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