Apart from the Amphibia, the echinoderms are the class of animals about which our knowledge of embryonic determination and its biochemical basis has in recent times made the most important forward strides. This is largely due to the brilliant work of the Scandinavian school. The fundamental facts of echinoderm experimental embryology are now available in a review in the English language by Hörstadius (1939), while on the biochemical side there are general accounts by Runnström (1935 a) and particularly by Lindahl (1936).

Copyright © 1940 The Company of Biologists Ltd.
1940
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