IgE in some human sera reacted with an antigen present in a large number of unrelated foods: potato, spinach, wheat, buckwheat, peanut, honey, and others. The antigen, which was periodate-sensitive and heat-stable, was also found in pollen. Even more surprisingly, these antibodies often reacted in vitro with bee and vespid venom and were sometimes apparently induced by Hymenoptera stings. © 1981.
Aalberse, R. C., Koshte, V., & Clemens, J. G. J. (1981). Immunoglobulin E antibodies that crossreact with vegetable foods, pollen, and Hymenoptera venom. The Journal of Allergy and Clinical Immunology, 68(5), 356–364. https://doi.org/10.1016/0091-6749(81)90133-0