TABLE 2.

In vitro production of cytokines from LN cells from immunized mice following stimulation with P60

Concn of P60 (μg/ml)	Level of cytokine released (pg/ml)a
	IL-4	IL-2	IFN-γ
0	12	68	380
10	80	200	960
25	200	240	1,700
50	240	220	2,200
100	260	320	1,260

^aSupernatants obtained after 72 h of in vitro lymphoproliferative culture were used to assay the generation of cytokines.