S. suis serotype 2 induces elevated levels of IL-1α in liver and spleen, but not in plasma. C57BL/6 mice were intraperitoneally inoculated with S. suis strain P1/7 (white bars) or SC84 (gray bars). Plasma (A, B), spleen (C, D), liver (E, F) were collected at different times post-infection and levels of IL-1α were quantified by ELISA. Values for mock-infected controls did not change between 6 and 48 h. As such, 0 h represents results for mock-infected mice throughout the experiment. Data are expressed as mean ± SEM (n = 3).