Experimental Evaluation of the Pathogenicity of Different Strains of Schistosoma mansoni

Table 3

Mean numbers of granulomas per tissue area (tissue area of 1.2469 mm²) in mice infected with the BH, SJ, and SD strains of S. mansoni and sacrificed at the eighth week of infection.

S. mansoni  strain	Number of mice	Number of granulomas (mean)/1.2469 mm^2
		Liver	Spleen	Pancreas	Intestines	Lungs		Duncan’s test*
BH	15	15.27					A
SD	10	13.80					A
SJ	10	10.60						B
SD	10		1.00				A
BH	15		0.13					B
SJ	10		0.10					B
SD	10			3.40			A
BH	15			2.00			A	B
SJ	10			0.10				B
SD	10				4.50		A
BH	15				3.87
SJ	10				2.50		A
BH	15					1.07	A
SD	10					0.40	A
SJ	10					0.00	A

*Means followed by same letter do not differ significantly from each other (α = 0.05).