Abstract
I HAVE shown earlier1,2 that, in Bombyx mori, pupal brain has a function which brings about imaginal differentiation, probably by affecting the prothoracic gland in the pupa, and that the mode of action by which the prothoracic gland is influenced is hormonal in nature. Kobayashi and Kirimura3 attempted to extract the hormone and succeeded in obtaining an oily substance which is effective in bringing about imaginal differentiation in the ‘Dauer-pupæ’ from the extract of the pupal brain.
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References
Kobayashi, M., J. Sericul., Sci. Jap., 24, 389 (1955) (in Japanese with English summary).
Kobayashi, M., Bull. Sericul. Exp. Sta., 15, 181 (1957) (in Japanese with English summary).
Kobayashi, M., and Kirimura, J., Nature, 181, 1217 (1958).
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KOBAYASHI, M. Effect of Larval Brain on the Imaginal Differentiation in the Silkworm. Nature 182, 110–111 (1958). https://doi.org/10.1038/182110a0
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DOI: https://doi.org/10.1038/182110a0
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