<i>lpg2− L. major</i> parasites induce memory T cells in infected BALB/c mice.

<p>BALB/c mice were infected with 2 million wild-type (WT) and <i>lpg2− L. major</i> stationary phase promastigotes and lesion size was monitored weekly with Vernier calipers (<b>A</b>). After 16 wk post-infection, draining lymph node cells and splenocytes from <i>lpg2−</i> infected BALB/c mice were labeled with CFSE, restimulated <i>in vitro</i> with SLA for 5 days, stained intracellularly for IFN-γ and assessed for proliferation by flow cytometry, the numbers showed on dot plots represent percentages in total T cell population (<b>B</b>). Data presented is a representative of 3 independent experiments with similar results.