TABLE 2.

Worm burdens at day 15 p.i. of T. muris-infected SCID mice reconstituted with PBL from immune BALB/c mice taken 60 days p.i. from naive uninfected BALB/c littermates or nonreconstituted controls

Treatment	No. of worms recovered
	From individual mice	Median
Infection alone	48, 145, 165, 230	155
Infection + immune PBL	10, 11, 23	11a
Infection + naive PBL	105, 152	128.5

^aSignificantly lower worm burden (P < 0.05) than in the infected controls.