The Effects of Triiodothyronine on the DNA and RNA Content on the Skin and Muscle of the Tail in Rana Clamitans Tadpoles
Date of Award
Master of Science
Since previous investigations have shown that thyroxine-treated tadpoles show an increase in the mitotic activity and the DNA and RNA content in the brain, it was decided to determine the effects of triiodothyronine, if any, on other tissues of the developing tadpole. It seemed feasible to investigate the effects of triiodothyronine, on peripheral tissue, the skin and muscles of the tail, of the tadpole with respect to the nucleic acid content.
Rna clamitans tadpoles were used to study the effects of triiodothyronine on the DNA and RNA content of the skin and muscles. The tadpoles used in this study were in stages XII to XV. They were staged from descriptions given by Taylor and Kollros (1946), for Rana pipiens larvae. Fifty tadpoles were used in this investigation. Twenty-five were designated as controls and twenty-five designated as experimentals. The tadpoles were approximately 75 mm in length, and were kept in finger bowls at room temperature in tap water before use. The animals were fed mustard greens during the entire experiment and the water was changed daily.
E. W. Martin
J. E. Berry
T. P. Dooley
E. K. Jones
Prairie View A&M College
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Date of Digitization
John B Coleman Library
City of Publication
Bryant, S. D. (1971). The Effects of Triiodothyronine on the DNA and RNA Content on the Skin and Muscle of the Tail in Rana Clamitans Tadpoles. Retrieved from https://digitalcommons.pvamu.edu/pvamu-theses/1358