blastula. The New Dictionary of Cultural Literacy, Third Edition. 2002

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The New Dictionary of Cultural Literacy, Third Edition. 2002.

blastula


(BLAS-chuh-luh) The stage of an embryo that consists of just over a hundred cells—a stage reached about one week after fertilization. At this stage the cells are just at the very beginning of cellular differentiation and are said to be totipotent (See totipotency).	1
‡ This is the stage of development where embryonic stems cells can be harvested for medical research.	2

The New Dictionary of Cultural Literacy, Third Edition. Edited by E.D. Hirsch, Jr., Joseph F. Kett, and James Trefil. Copyright © 2002 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

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