TABLE 3.

Parasite burdens in spleens and livers of BALB/c mice after priming with various forms of UR6 before infection with L. donovani AG83^a

Group	Priming with 109 UR6 organisms prior to infection with AG83	Parasite count (mean ± SD) in:		% Reduction in parasite burden with respect to group A in:
		Spleen	Liver	Spleen	Liver
A		(2.70 ± 0.966) × 107	(5.13 ± 0.66) × 107
B	Live UR6	(2.58 ± 1.06) × 105	(6.00 ± 2.70) × 106	99.04b	88.30e
C	Heat-killed UR6	(4.80 ± 2.30) × 105	(1.33 ± 0.834) × 107	98.22b	74.03d
D	Formaldehyde-fixed UR6	(2.28 ± 0.98) × 106	(3.20 ± 1.14) × 106	91.55c	93.76e
E	Sonicated UR6	(1.35 ± 0.35) × 105	(1.35 ± 0.77) × 105	99.50b	93.68e

^aAll groups received AG83 on day 0, and splenic and liver parasite burdens were counted on day 90. Mice were primed with UR6 in days 60, 45, and 30 before infection. 

^bP < 0.01. 

^cP < 0.025. 

^dP < 0.005. 

^eP < 0.0005.