TABLE 2.

Histological assessment of cell types present in the lungs of mice infected with P. brasiliensis C

Group and wk postinfection	Cell type or inflammatory responsea
	L	H	PC	GC	GF
Males
2	+++	+++	−	A	P
4	+++	+++	++	A	P
6	++	+++	+	P	P
Females
2	++	+	−	A	A
4	++	+	−	A	A
6	++	−	−	A	A

^a Average dimensions of the total area of lung sections examined was 15 by 10 mm. L, lymphocytes; H, histiocytes; PC, plasma cells; GC, giant cells; GF, granuloma formation. −, 0 cells; +, 1 to 9 cells; ++, 10 to 24 cells; +++, 25 to 50 cells. A, absent; P, present.