Treatment of experimental visceral leishmaniasis with lymphokine encapsulated in liposomes.

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Abstract
Highly susceptible mice were infected with Leishmania donovani chagasi and were treated with supernatants, free or encapsulated in liposomes, from concanavalin A-stimulated or unstimulated mouse spleen cell cultures. Treatment consisted of multiple i.v. injections beginning 2 days before to 2 days after infection. Mice treated with lymphokine-rich supernatants encapsulated in liposomes had significantly fewer liver parasites than the control groups, demonstrating in vivo activity of lymphokine against an infectious organism.