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We used confocal immunofluorescence microscopy to examine spindle migration, morphology and orientation during the maturation of Xenopus oocytes, in the presence or absence of cytochalasin B (CB), an inhibitor of actin assembly. Treatment with CB during maturation (10-50 micrograms/ml beginning 0-3 h prior to addition of progesterone) disrupted the normal(More)
In wild-type yeast mitochondrial inheritance occurs early in the cell cycle concomitant with bud emergence. Cells lacking the PTC1 gene initially produce buds without a mitochondrial compartment; however, these buds later receive part of the mitochondrial network from the mother cell. Thus, the loss of PTC1 causes a delay, but not a complete block, in(More)
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