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Science 20 May 1966:
Vol. 152. no. 3725, p. 1046
DOI: 10.1126/science.152.3725.1046
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Articles

Amniotic Contraction and Embryonic Motility in the Chick Embryo

Ronald W. Oppenheim 1

1 Departments of Zoology and Psychology, Washington University, St. Louis, Missouri

In the report "Amniotic contraction and embryonic motility in the chick embryo" by R. W. Oppenheim (22 April, p. 528), the second sentence of the fifth paragraph should have read, "It was implied that this motility was unaffected by exteroceptive stimulation of the embryo. This stimulation included amnion contractions, yolk-sac movements, and self-stimulation."

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