“Isolated peripheral blood lymphocytes … asthmatic children receiving only DSCG had significantly (p less than 0.005) … (PDE) activity (mean 1.05 +/- 0.17 SE per 10(6) cells) than normal individuals (2.93 +/- 0.14) and allergic … methylxanthines (4.08 +/- 0.28) or no medications (3.58 +/- 0.2).”