Lectin agglutinability of non-neoplastic and neoplastic human lymphoid cells in vitro.

Agglutination by two lectins, Concanavalin A (Con A) and Ricinus communis agglutinin (RCA), has been investigated in a human lymphoid cell system. The main conclusions of this study are: (1) no systematic correlation exists between the neoplastic state and sensitivity to Con A or RCA; (2) cells of neoplastic lines vary unsystematically in their surface properties as evaluated by Con A agglutination, with the possible exception that presence of Epstein-Barr virus (EBV) is associated with a high degree of agglutination and (3) cells of diploid lymphoblastoid lines and phytohemagglutinin (PHA)-stimulated lymphoctes agglutinate similarly and significantly better than unstimulated T- or B-lymphocytes. The relatively simple Con A agglutination assay can be used as an adjunct in classification of human lymphoid cell lines.