although analysis is as yet far from complete , the qa-1 system should already be of considerable value because it distinguishes a population of lymphocytes that is not defined by any other antigenic system , according to three criteria : ( a ) representation of qa-1 cells among t-cell sets defined by lyt phenotypes , ( b ) the profile of responses to mitogens exhibited by lymphocyte populations depleted of qa-1+ cells , and ( c ) the profile of immune responses of lymphocyte populations depleted of qa-1+ cells .
C0003320
antigenic
C0301872
immune