in contrast , ly-1+ and ly-23+ subclasses appear later in the peripheral tissues than do ly-123+ cells , and are resistant to the early effects of adult thymectomymperiheral lymphoid populations depleted of ly-1+ cells and ly-123+ cells ( and thereby enriched for ly-23+ cells ) were incapable of developing significant helper activity to srbc but generated substantial levels of cytotoxic activity to allogeneic target cells .
C0007634
cells
C3485979
allogeneic