Background Ragweed (Ambrosia artemisiifolia) and mugwort (Artemisia vulgaris) are the major cause of pollen allergy in late summer. Allergen-specific lymphocytes are crucial for immune modulation duri
T cell lines were generated from skin biopsies taken from rash site and contralateral (uninvolved) site skin of persons recovered from herpes zoster at days 45, 90, and 360 from rash onset. The cell l