Figure 1From: Direct observation of hematopoietic progenitor chimerism in fetal freemartin cattleY-chromosome specific in situ hybridization to fetal bovine liver. Dark nuclear spots represent Y chromosomes. A: Chimeric male. B: Chimeric female (freemartin). C: Normal female (from another pregnancy). Erythrocytes were stained with diaminobenzidine.Back to article page