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Influences of thyroxine on cell proliferation in the retina of the clawed frog at different ages
Author(s) -
Beach D. H.,
Jacobson Marcus
Publication year - 1979
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/cne.901830309
Subject(s) - biology , retina , xenopus , retinal , mitosis , anatomy , neuroscience , microbiology and biotechnology , endocrinology , genetics , biochemistry , gene
The change in spatial pattern of retinal cell production that occurs after midlarvae stages in Xenopus is shown to occur because of a greater proliferative response to thyroxine in the ventral than in the dorsal margin of the retina. The asymmetry of retinal cell production is not caused by a dorsoventral difference in the duration of the mitotic cycle. It is concluded that the asymmetry is due to differences in the number of proliferative cells in different parts of the retinal margin.