two-dimensional polyacrylamide-gel electrophoresis of acid extracts of thyroid and thymus tissue , and of thyroid nuclei , revealed the presence of three hclo4-soluble nuclear proteins , ps.1 , ps.2 and ps.3 , whose electrophoretic mobilities closely resembled those of hmg ( high-mobility-group ) proteins 14 and 17 .
C0007610
nuclei
C0028589
nuclear proteins