Fig' 93

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Fig. 9-3
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Fig. 21-34
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Fig. 21-5
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MPF activity (oocyte maturation promoting factor)
Fig. 21-6
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Fig. 21-7
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Fig. 21-8
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Preparation of cycling extracts from activated
frog eggs
G2-arrested frog oocytes
Impose electric field Remove buffer
Centrifuge
Lipid Cytoplasm Yolk
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Xenopus Egg Extract
sperm nucleus
30 min
60 min
80 min
Murray, Kirschner (1989) Nature 339275
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MPF activity
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Fig. 21-9


Chromatin condensation
Chromatin decondensation
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Fig. 21-9
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Fig. 3-13
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Fig. 21-9
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Fig. 21-10