“…We have extensive evidence of significant and relevant fluctuations in peripheral blood Eo-Bas0 progenitors in allergic airways disease (21-26, 57, 58, 86-88) ( Table 1 ). In general, allergic rhinitis and atopy patients appear to have constitutive increases in these progenitors, observed mainly out-of-season (57,58). Fluctuations in blood Eo-Baso progenitors occur during natural allergen exposure (57,58,89).…”