Fig. 1From: Interleukin 1 Induces HIV-1 Expression in Chronically Infected U1 Cells: Blockade by Interleukin 1 Receptor Antagonist and Tumor Necrosis Factor Binding Protein Type 1 IL-1-induced HIV-1 p24 antigen production is concentration dependent Ul cells were cultured with increasing concentrations of IL-1α (◯) or IL-1β (●). After 24 hr cells were lysed with Triton X-100. An ELISA was performed to determine the total concentration of p24 antigen. Each data point depicts the mean ± SD of four samples. *p < 0.05; †p ≤ 0.01; and §p ≤ 0.001 when comparing U1 cells stimulated with IL-1 with unstimulated cells, p < 0.001 using analysis of variance.Back to article page