He was the 13th president of American Society for Cell Biology, and known as the Father of Mammalian Cytogenetics.
Hsu worked in the laboratory of Charles Pomerat at the University of Texas Medical Branch during the early 1950s[citation needed].
Since the turn of the twentieth century, chromosomes prepared on microscope slides formed clumps that made it extremely difficult to distinguish them.
[7] Bryan Sykes describes Hsu and the diploid chromosome number in his book Adam's Curse.
[8] Hsu was president of the American Society for Cell Biology and served on the faculty at M.D.