[Enzymes of the peripheral blood leukocytes from the vertebrate host in an experimental Leishmania infection. 1. Neutrophil acid phosphatase].

The results of cytochemical identification of acid phosphatase in the neutrophils of mice, guinea pigs and golden hamsters inoculated with leishmanial promastigotes of different species and virulence and also of people vaccinated against zoonotic cutaneous leishmaniasis are presented. The reversible increase of the enzyme activity in host's blood neutrophils and its dependence on parasite species and virulence are shown.