Template:Historic Twinning links
From Embryology
Historic Embryology - Twinning |
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1915 Twin embryos 17-19 somites | 1916 Conjoined Twins | 1922 Monozygotic origin identical twins | 1927 Separate amnions | 1942 Twin chorion | 1955 Twins and multiple birth |
Carnegie Embryos: 8505a 8505b 7170a 7545 9009a and b 9123 5542B 5935A 5621A |