we show here in an experimental system that the anti-cd9 mab 50h.19 , alb6 , and ba-2 can induce rapid , and irreversible , homotypic aggregation of the cd9-positive pre-b lymphoblastoid cell lines nalm-6 and hoon , but not of the cd9-negative b cell line raji .
C1292769
pre-b
C0004561
b cell