These results imply that stronger purifying selection is operating at the fem gene in the presence of csd.
2
Previous studies showed that fem retained its sex determination function, whereas the rise of csd established a new primary signal of sex determination.
3
Methods: A national CSD surveillance study is conducted in Israel since 1991.
4
Results: There were 846 immunocompetent patients with CSD included in this study.
5
CSD: She's a joy to behold and the funniest woman I know.