Comparison of chromosomal protein patterns of thymus and liver in cattle, sheep, goats and pigs.

Chromosomal proteins in the thymus and liver tissues of cattle, sheep, goats and pigs were analyzed electrophoretically. Only minor differences in histone H1 subfractions could be detected between the four species. In the 300 mM NaCl soluble fraction of nonhistone chromosomal proteins (NHCP), tissue- and species-specific qualitative and quantitative differences were found in the protein patterns. The potential practical application of the study of chromosomal proteins to animal breeding is discussed.