The Two-gradient Hypothesis in Primary Induction. The Combined Effect of Two Types of Inductors Mixed in Different Ratios
Open Access
- 1 September 1961
- journal article
- research article
- Published by The Company of Biologists in Development
- Vol. 9 (3) , 514-533
- https://doi.org/10.1242/dev.9.3.514
Abstract
On the basis of certain earlier suggestions made by Lehmann (1950) and Yamada (1950), together with our own experimental data, a modification of the two-gradient hypothesis of primary induction was presented by us some years ago (Toivonen & Saxén, 1955). Subsequently, this theory has often been referred to, accepted or criticized, and even misunderstood. There may thus be reasons for discussing it in the light of some recent experimental data.Keywords
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