Fig. 1. Cytokine concentrations in alveolar type II (ATII) cell supernatants. Effects of recombinant murine interleukin-1β (rmIL-1β) stimulation. The cytokine secretions by rat ATIIcells were induced by rmIL-1β (1 ng/ml). Results are expressed in picograms per milliliter, mean ± SD; ‡P < 0.001 versus unstimulated ATIIcells. MCP-1 = monocyte chemoattractant protein-1; MIP-2 = macrophage inflammatory protein-2.