Blastula embryos of the sea urchin Paracentrotus lividus, when dissociated into single cells by exposure to Ca2+- and Mg2+-free sea water, reassociate spontaneously to form aggregates capable of ...
Proceedings of the National Academy of Sciences of the United States of America, Vol. 78, No. 11, [Part 2: Biological Sciences] (Nov., 1981), pp. 6803-6807 (5 pages) Switches of the types of histones ...
Sea urchins and most other animals begin their embryonic development as small clusters of cells, called blastulas. The blastulas are surrounded by a protective fertilization envelope Disclaimer: AAAS ...
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