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Science 7 December 1990:
Vol. 250. no. 4986, p. 1320
DOI: 10.1126/science.1320-c
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Articles

The Embryo Takes Its Vitamins

A burst of recent work suggests that derivatives of vitamin A have a fundamental role in giving shape to the developing mammalian embryo

Michelle Hoffman

In the Research News article "The embryo takes its vitamins" by Michelle Hoffman (19 Oct., p. 372), three double bonds were omitted from the side chain of the structure shown on page 372 for all-transretinoic acid. The correct structure is shown below.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)