ON THE RHYTHMICAL SUSCEPTIBILITY OF DEVELOPING SEA URCHIN EGGS TO HYPERTONIC SEA WATER
نویسندگان
چکیده
منابع مشابه
Action of Colcemid in Sea Urchin Eggs
The effects of Colcemid, the deacetyl-N-methyl derivative of colchicine, on the eggs of Arbacia punctulata were investigated. Colcemid in concentrations of 2.7 x 10(-5)M or greater blocks syngamy (the fusion of the pronuclei) in these eggs. Although a tenfold decrease in concentration of Colcemid usually permits the pronuclei to fuse, the subsequent division is blocked. In the sea urchin egg, t...
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Cytasters induced within unfertilized sea-urchin eggs.
Conditions that induce the formation of asters in unfertilized sea-urchin eggs have been investigated. Monasters were formed by treatment of eggs with acidic or basic sea-water, or procaine- or thymol-containing sea-water. A second treatment step, incubation with D2O-containing, ethanol-containing or hypertonic sea-water induced multiple cytasters. The number and size of cytasters varied accord...
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ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1915
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1536429