expression of alternatively spliced products of the cd45 leukocyte common antigen gene identifies two populations of blood t cells : `` '' naive '' '' t cells ( containing cd45r-iv mrna transcripts , cd45 220 , 205 kd surface proteins detected with antibody 2h4 ) that respond poorly to recall antigens , and `` '' memory '' '' t cells ( containing cd45r-0 mrna transcripts , expressing cd45 180 kd protein , detected with antibody uchl1 ) that respond promptly to recall antigens .
C0025252
d surface protei
C0033684
kd pro