FIG. 2.

Relative quantity of cytokine mRNA in skin biopsies of Heaf tests before and after oral liquid BCG vaccine. Values indicate relative amounts of cytokine RNA extracted from skin biopsies taken 7 days after a standard tuberculin Heaf test, either before oral BCG immunization or 1 month after. Subject V039, diamonds; subject V040, circles; subject V041, squares; subject V043, triangles. ND, not detected. All cytokine mRNAs were assessed relative to a standard control RNA except V039 IFN-γ, which used a different control RNA (indicated by dotted line). No preimmunization results on V041 for IL-1α and -β, IL-2, IL-12p40, and IL-15 were available due to insufficient sample. The y axes are plotted on a logarithmic scale.