Template:Streeter-embryo to fetus: Difference between revisions
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| In 1949 the embryologist [[Embryology History - George Streeter|George Streeter]]<ref name=Streeter1949>{{Ref-Streeter1949}}</ref> used the replacement of cartilage within the humerus by bone marrow as an arbitrary definition of the embryo to fetus transition. | | valign=top|In 1949 the embryologist [[Embryology History - George Streeter|George Streeter]]<ref name=Streeter1949>{{Ref-Streeter1949}}</ref> used the replacement of cartilage within the humerus by bone marrow as an arbitrary definition of the embryo to fetus transition. | ||
::"''If the onset can be recognized in a given specimen, that specimen is straightway classed as a fetus.''" | ::"''If the onset can be recognized in a given specimen, that specimen is straightway classed as a fetus.''" | ||
Revision as of 11:21, 1 May 2018
In 1949 the embryologist George Streeter[1] used the replacement of cartilage within the humerus by bone marrow as an arbitrary definition of the embryo to fetus transition.
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- ↑ Streeter GL. Developmental horizons in human embryos (fourth issue). A review of the histogenesis of cartilage and bone. (1949) Carnegie Instn. Wash. Publ. 583, Contrib. Embryol., 33: 149-169. PMID: 18144445
