Parasite culture, infection, and load estimation

LS Laís A. Sacramento
JC Jéssica L. da Costa
ML Mikhael H. F. de Lima
PS Pedro A. Sampaio
RA Roque P. Almeida
FC Fernando Q. Cunha
JS João S. Silva
VC Vanessa Carregaro
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L. infantum (isolate HU-UFS14) was cultured in Schneider medium with 20% heat-inactivated fetal bovine serum, 5% penicillin and streptomycin (both from Sigma-Aldrich, Saint Louis, MO, USA), and 2% male human urine. Parasite virulence was maintained by serial passages in BALB/c mice. Mice were injected in their retro-orbital plexus with 107 stationary-phase L. infantum promastigotes in 100 μL of PBS. Hepatic and splenic parasite burdens were determined using a quantitative limiting dilution assay.

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