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Journal of Experimental Biology 16,150-154 (1939)
Published by Company of Biologists 1939

Experiments on the Effect of Dyes on Induction and Respiration in the Amphibian Gastrula

R. A. BEATTY 1, S. DE JONG 1, and M. A. ZIELINSKI 1

1 Zoological and Biochemical Laboratories, Cambridge

1. It is shown that pieces of presumptive epidermis (ventral ectoderm of the gastrula), when isolated into weak solutions of several dyes, will undergo neural differentiation. Dyes such as Janus green and neutral red, which are not known to accelerate cell respiration, appear to have this effect, as well as methylene blue, the accelerating action of which on cell respiration is well known.

2. Measurements of the oxygen consumption of isolated pieces of the gastrula by the Cartesian Diver method show that methylene blue, if in weak concentration, has an accelerating action of about 45%. In stronger concentrations it is inhibitory.

Submitted on October 12, 1938






© The Company of Biologists Ltd 1939