b-cell 'activation ' in cultures stimulated with pokeweed mitogen ( pwm ) , staphylococcus aureus strain cowan i , or formaldehyde-fixed salmonella paratyphi b ( spb ) was evaluated by enumeration of cells secreting immunoglobulin ( ig ) and by quantitation of ig released into culture supernatants .
C0007634
cells
C1327616
secreting