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Cited by 278

The DOI matches its Crossref record; 15 of the 15 references it cites were found in a registry or an index.

Segregation During Ascidian Embryogenesis of Egg Cytoplasmic Information for Tissue-Specific Enzyme Development

Open access
Whittaker, J. R.·1973·Proceedings of the National Academy of Sciences

Abstract

Cleavage-arrested embryos of the ascidian Ciona intestinalis were able to differentiate two tissue-specific enzymes—muscle acetylcholinesterase (EC 3.1.1.7) and brain pigment cell tyrosinase (EC 1.10.3.1). Cytochalasin B, colchicine, Colcemid, and podophyllotoxin were used as cleavage inhibitors at early embryonic stages up to the 64-cell stage. Only certain cells in the cleavage-arrested embryos developed these histochemically detectable enzymes, and this ability followed the cell lineage patterns for the two tissues. This result implies the presence of specific positional information in the egg cytoplasm that is differentially segregated during cleavage. There were distinct and separate puromycin and actinomycin D sensitivity periods for the occurrence of each enzyme during development of both normal and cleavage-arrested embryos. The segregated information is apparently neither the enzyme proteins nor RNA templates for enzyme synthesis, but is probably concerned with activation of appropriate genes.

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Crossref · 10.1073/pnas.70.7.2096

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Metadata

Authors
Whittaker, J. R.
Venue
Proceedings of the National Academy of Sciences
Published
1973-07
Volume
70
Issue
7
Pages
2096-2100
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1979050181
Cited by
278
References
15
FWCI
3.07
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Segregation During Ascidian Embryogenesis of Egg Cytoplasmic Information for Tissue-Specific Enzyme Development. https://app.cochat.ai/papers/10.1073/pnas.70.7.2096
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Whittaker, J. R. (1973). Segregation During Ascidian Embryogenesis of Egg Cytoplasmic Information for Tissue-Specific Enzyme Development. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.70.7.2096

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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