the effect of the tumour-promoting agent tpa ( 12-0-tetra-dodecanoyl-phorbol-13-acetate ) on the proliferation and ig secretion response of blood and tonsil lymphocytes was investigated and compared to that of the t-cell-dependent polyclonal activators pokeweed mitogen ( pwm ) and group a streptococcal cell membranes ( a-scm ) or the t-cell-independent b cell mitogen staphylococcus aureus cowan i ( sac ) and a t-cell-independent b cell activator klebsiella pneumoniae ( klebs m ) .
C0007603
cell membranes
C0007634
cell