An Interactive Annotated World Bibliography of Printed and Digital Works in the History of Medicine and the Life Sciences from Circa 2000 BCE to 2022 by Fielding H. Garrison (1870-1935), Leslie T. Morton (1907-2004), and Jeremy M. Norman (1945- ) Traditionally Known as “Garrison-Morton”
15897 entries, 13853 authors and 1929 subjects. Updated: June 8, 2023
Permanent Link for Entry #14058
The theory of the free-martin.Science, 43, 611-613, 1916.
Lillie found that sex steroids in the blood controlled differentiation. "Free-martins, sterile female cows born without sex organs, were a perplexing issue for cattle ranchers. Lillie found that free-martins formed when twins shared the same placenta. The hormones from the male twin would then be shared with the female, stunting the growth of her reproductive system." (Wikipedia article on Frank Rattray Lillie, accessed 3-2020).
Subjects: BIOLOGY › Reproduction