An experimental study of the origin of pigment cells in Amphibia

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  • This paper is a revision of a dissertation presented to the faculty of Yale University in partial fulfillment of the requirements for the degree of doctor of philosophy. An abstract of the paper was presented at the Pittsburgh meetings of American Society of Zoölogists, December 27, 1934 (DuShane, '34), and a preliminary report has been published in Science (vol. 80, pp. 620–621).

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