hybrids containing the human 10q+ chromosome had the human genes for terminal deoxynucleotidyltransferase that has been mapped at 10q23-q25 and for c alpha [ the constant region of tcra ( the alpha-chain locus of the t-cell antigen receptor gene ) ] , but not for v alpha ( the variable region of tcra ) .
C0524890
alpha-chain locus
C0087048
tcra