Abstract
The permeability of the amphibian oocyte nuclear envelope in situ has been determined for three tritiated dextrans. The envelope is a sieve, restricting molecular movement between the cytoplasm and nucleus. The patent radius of its pores is about 45å.
Publication types
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Amphibians
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Animals
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Cell Nucleus / metabolism*
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Cell Nucleus / ultrastructure
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Cytoplasm / metabolism
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Dextrans / metabolism*
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Diffusion
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Female
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Kinetics
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Macromolecular Substances
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Membranes / metabolism
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Ovum / ultrastructure*
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Particle Size
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Permeability
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Tritium
Substances
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Dextrans
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Macromolecular Substances
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Tritium