Krco C J, Goldberg E H
Science. 1976 Sep 17;193(4258):1134-5. doi: 10.1126/science.959826.
The H-Y (male) antigen is expressed on 50 percent of eight-cell embryos (2 days old) of the mouse, strain C57BL/6. This work provides additional evidence that H-Y expression is not dependent on male differentiation.
