electrophoretic analysis of acid-soluble chromosomal proteins isolated from rooster testis cell nuclei at different stages of spermatogenesis , revealed that the nuclear content of a protein identified by its solubility , electrophoretic mobility and amino acid analysis as the protein conjugate histone h2a-ubiquitin ( uh2a , a24 ) changed markedly from meiotic cells to late spermatids .
C0007610
cell nuclei
C0028589
nuclear