the results obtained in this study also prove that the nuclei of chicken red blood cells and human sperm do not contain , or contain very small amounts of , histone fraction h1 , and that salmon sperm nuclei do not contain any of the histone fractions , and suggest that the nuclei of mature human spermatozoa contain smaller amounts of histones in comparison to somatic cell nuclei .
C0019652
histones
C0007610
cell