Figure 1From: Effects of helium and air inhalation on the innate and early adaptive immune system in healthy volunteers ex vivoTNF-α levels in plasma after 0,2,4, and 24 hours of incubation with LPS in RPMI (dashed line) or RPMI alone. Blood was sampled at time point T0 (baseline), before 30 min of helium or air inhalation. Data (n = 24 per group) shown are means +/− SEM.Back to article page