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Definition of: embryology
(em′brē·ol′ə·jē) noun
The science which deals with the origin, structure, and development of the embryo.
—em′bry·o·log′i·cal (-ə·loj′i·kəl) adjective
—em′bry·o·log′i·cal·ly adverb
—em′bry·ol′o·gist noun
A. Before incubation, a germinal disk shown by small black spot. B. Three-day-old embryo, showing blood vessels radiating from heart. C. The fourth day. D. The fifth day. E. The seventh day. F. The nineteenth day, when chick absorbs remaining yolk. The chick hatches on the twenty-first day.
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