Fig 4.
IL-6 and IL-8 synthesis and secretion. (A and B) mRNA expression for IL-6 and IL-8, detected by real-time RT-PCR, relative to expression of GAPDH. Data are expressed as median, upper and lower quartiles (boxed area), and range median (range). (C and D) IL-6 and IL-8 levels in cell-free supernatants. Data are expressed as mean ± S.D. *P < 0.05; **P < 0.01; ***P < 0.001.