in the early fetal thymus the cortical epithelial cells and an apparently more mobile medullary interdigitating cell population expressed large amounts of ia-like ( hla-dr ) and moderate amounts of hla-a , b , c antigens while the lymphoid cells in the cortex expressed human t lymphocyte and cortical thymocyte antigens but were ia- , hla-a , b , c- .
C0019764
hla-dr
C0086418
human