cortical thymocytes were tdt+ and expressed t-cell antigens ( hutla+ ) , a thymocyte-specific antigen ( hta-1+ ) , and a leukocyte antigen ( hle-l++ ) but lacked detectable hla-a , b , c and la ( hla-d ) antigens .
C0019721
leukocyte
C0019754
hla-d