Gram-positive staphylococci in the kidneys of infected mice. (A and B) Representative serial sections of a kidney from a D1^−/−D1L3^−/− mouse 72 h after infection with S. aureus were stained with H&E (A) or Gram stain (B). Each panel shows a low-magnification image (scale bar, 1 mm) and high-magnification images of areas highlighted in black rectangles (scale bar, 100 μm). (C) Further magnification of a Gram-stained section with select regions with Gram-positive staphylococci, indicated by yellow.