## Abstract The rate at which the cleavage stimulus moves from the mitotic apparatus to the cell surface was calculated from measurements made on flattened, fertilized __Echinarachnius parma__ eggs with excentric nuclei. The time interval between the appearance of furrows in the closer and more dis
Experiments concerning the cleavage stimulus in sand dollar eggs
โ Scribed by Rappaport, R.
- Book ID
- 102890302
- Publisher
- John Wiley and Sons
- Year
- 1961
- Tongue
- English
- Weight
- 753 KB
- Volume
- 148
- Category
- Article
- ISSN
- 0022-104X
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Dividing eggs of Echinarachnius parma, Hydractiniu echinata, Cerebratulus fuscus and Mytilus edulis were subjected to experiments designed to yield additional information concerning the cytoplasm in the cleavage plane. Answers to the following questions were sought: (1) Will the base of the furrow c
Because information concerning the time relations of the cleavage stimulus should prove useful in characterizing both the stimulus and the nature of the response in the cell surface, methods were devised for determining how long the surface must be acted upon by the asters to produce a furrow and th
The effect of change in intracellular pH (pHi) on mitosis was investigated in the sand dollar egg. The pHi in the fertilized egg of Scaphechinus mirabilis and Clypeaster japonicus, which was 7.34 and 7.31, respectively, changed by means of treating the egg at nuclear envelope breakdown with sea wate