TABLE 2.

Induction of IgG2 by PAF^a

PAF concn (nM)	NP PBL			LJP PBL
	IgG2 induction (%)	n	P	IgG2 induction (%)	n	P
Control	100	7		100	4
10	144 ± 15b	7	<0.03	98 ± 4	4	NSc
100	123 ± 3b	7	<0.01	105 ± 5	4	NS
1,000	122 ± 22	6	NS	103 ± 3	4	NS

^aThe data were normalized by presenting the results as the percentages of the IgG2 response of NP or LJP PBL cultured in the absence of PAF. Thus, the control response in the absence of PAF equals 100%. The 100% response for NP subjects was 339 ng of IgG2/ml, and individual results ranged from 160 to 570 ng/ml. For LJP subjects, the 100% response was 1,020 ng of IgG2/ml, and individual results ranged from 480 to 1,800 ng/ml. Means ± standard errors are shown. 

^bSignificantly different from control PBL. 

^cNS, not significantly different from PBL.