Topic summary
Barr bodies
Extracted from the Wikipedia article Barr body.
1949 - Discovery of the Barr body
Barr bodies were first discovered in 1949 by Canadian researcher Murray Barr and his undergraduate student Ewart Bertram. While examining the neuronal cells of female cats, they observed a distinct, densely staining structure that was absent in male cells. This structure was initially referred to as a "nucleolar satellite." Although its significance was not immediately understood, the observation laid the foundation for subsequent research in cytogenetics.