a mouse hybridoma cell line iib9 , secreting igg2b antibody specific for a hela cell antigen , was obtained by fusion of a mouse myeloma cell line with spleen cells from mice immunized with purified vsv tso45 mutant ( defective in assembly of g protein ) which had been reproduced at a non-permissive temperature in hela cells .
C1327616
secreting
C0007634
cells