FIGURE 3.

Expression of IL-7 and IL-15 proteins and transcripts in different organs. A, The concentrations of soluble IL-7 in bronchial lavage (airways), spleen supernatant, and plasma were measured by ELISA. Error bars represent SEM from three naive B6 mice. B, The transcript levels of IL-7, IL-15, and β-actin in the indicated organs were determined by real-time PCR. The levels of IL-7 and IL-15 transcripts were normalized to that of β-actin transcripts from each organ and presented as relative levels. Error bars represent the range from duplicate samples.