Figure 1From: Expression of inducible nitric oxide synthase in macrophages inversely correlates with parasitism of lymphoid tissues in dogs with visceral leishmaniasisAverage and standard error of the density of parasites (A) and iNOS+cells (B) in the lymph nodes and spleen of asymptomatic and symptomatic dogs naturally infected with Leishmania (Leishmania) infantum chagasi , and control animals from a non-endemic visceral leishmaniasis area. Data analysed by the Mann–Whitney test.Back to article page