In 1935, she was recruited by Robert A. Cooke to work in his allergy research laboratory at Roosevelt Hospital in New York, where she studied the treatment of hay fever with pollen extracts.[1] She left the position in 1938 for an appointment as associate professor of clinical medicine at Weill Cornell Medical College.[3] There, she continued to research blocking antibodies and their antigens, specifically in relation to hay fever, and published a series of articles published in five installments in the Journal of Immunology between 1940 and 1943.[1]