Template:Streeter-embryo to fetus

From Embryology
Revision as of 14:04, 13 June 2019 by Z8600021 (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)


Historic Embryology
Embryology History George Streeter 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.
"If the onset can be recognized in a given specimen, that specimen is straightway classed as a fetus."