Figure 4. B and T cells are recruited into the kidneys of S. aureus-infected mice during the persistent phase of the infection.

1. Immunostaining of a S. aureus-infected kidney section showing the infiltration of IgG⁺ plasma cells (brown-stained cells in Ai and Aii). A kidney section from an uninfected animal stained for IgG⁺ plasma cells is shown in Aiii. Original magnification, ×20 (i) and ×40 (ii and iii).
2. Immunostaining of a S. aureus-infected kidney section showing the infiltration of CD3⁺ T cells (brown-stained cells in Bi and Bii). A kidney section from an uninfected animal stained for CD3⁺ T cells is shown in (Biii). Original magnification, ×20 (i) and ×40 (ii and iii).