Abstract
A group of 84 sera from a selected population of patients suspected of hypersensitivity to food and environmental allergens was examined by RAST [radioallergosorbent test] and passive transfer in monkeys for Ig[immunoglobulin]E and IgG (S-TS [short-term sensitizing]) antibodies, respectively. A high proportion (26%) showed IgG (S-TS) to milk; this was more than 4 times the frequency (6%) for IgG (S-TS) to any other antigens tested. IgE and IgG (S-TS) antibodies behaved as independent biological systems.