The metabolic background for morphogenesis has been the object of intense investigations during the past decades. As an approach to this problem the metabolic effects of the vegetalizing lithium ion and the animalizing thiocyanate ion have been investigated (cf. Lindahl, 1936, and Gustafson, 1952). The studies of antimetabolites (growth-factor analogues) during the last decade have opened pathways for interfering with the embryonic metabolism in a predictable way. Using the antimetabolites it is now possible to get a deeper insight into the relation between metabolic processes and different developmental trends.

Copyright © 1954 by Company of Biologists
1954
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