Identification of a putative second T-cell receptor

Abstract
Framework monoclonal antibodies have identified a population of human lymphocytes that express the T3 glycoprotein but not the T-cell receptor (TCR) .alpha.- and .beta.-subunits. Chemical crosslinking experiments reveal that these lymphocytes express novel T3-associated polypeptides, one of which appears to be the product of the T.gamma. gene. The other polypeptide may represent a fourth TCR subunit, designated T.delta.