FIG. 1.

MHC class II expression in Toxoplasma-infected eyes. Mice were either mock infected (solid black lines) or intravitreally injected (gray lines) with 10⁴ parasites. Four and 6 days later, eyes were harvested and analyzed by flow cytometry for MHC class II expression. The gate includes all MHC class II⁺ events as determined by isotype staining controls (dashed line). The y axes of the 4-day histograms were decreased to highlight class II⁺ cells. Shown are three representative histograms from independent experiments.