TABLE 4.

Gamma interferon secretion by peripheral blood mononuclear cells following antigen stimulation at the time of challenge infection and 1 week later

Group (description)	IFN-γ response (1 SD) [ng/ml−1]
	Immediately prior to challenge	Week 1 postchallenge
1 (challenge control)	0.82 (1.0)	258.65 (183.8)
2 (live immunization)	47.47 (31.77)	89.19 (87.84)
3 (lysate + VSA3)	1.96 (1.25)	152.3 (206.1)
4 (lysate + Quil A)	1.79 (1.74)	459.93 (653.0)
5 (adjuvant control)	0.47 (0.76)	450.55 (383.99)