Histologic appearance of the spleen in LCMV-infected mutant and wild-type mice. Hematoxylin and eosin staining of sections of spleen from representative mutant and wild-type mice 12 days after LCMV infection. Images were acquired using an Olympus AX70 microscope equipped with a 4× UPlanFl objective with a numeric aperture of 0.13, a SPOT-RT slider camera and SPOT software Version 4.6. 40× magnification is displayed. jinx indicates Unc13d^jinx/jinx mice; jinx;Myd88^poc, Unc13d^jinx/jinx;Myd88^poc/poc mice.