title: More histone structures.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D005075:Biological Evolution; D002454:Cell Differentiation; D002843:Chromatin / Q000648:ultrastructure; D004247:DNA / Q000378:metabolism; D006657:Histones / Q000502:physiology; D011485:Protein Binding; D013045:Species Specificity
chemical_list: D002843:Chromatin; D006657:Histones; D004247:DNA