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Biol Cell. 1987;60(2):97-102.

Segregation of mitochondria in the cytoplasm of Xenopus vitellogenic oocytes.

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  • 1Ecole Pratique des Hautes Etudes, Universit√© de Paris-Sud, Orsay, France.


In actively growing vitellogenic oocytes of Xenopus laevis mitochondria segregate into 2 populations. One stays around the nucleus, actively replicates mitochondrial DNA (mtDNA), and builds up most of the stock of the mitochondria in the full-grown oocyte. The other moves toward the vegetal pole and stops replicating mtDNA early in vitellogenesis. Organelles of this population are components of the germ plasm of the cell.

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