Biologics Regulation and ResearchThe People and Work of Buildings 29 & 29A

She worked as a bacteriologist at Garfield Memorial Hospital and then Walter Reed Army Institute of Research.

Hopps joined the National Institutes of Health (NIH) in 1956, first in the National Institute of Allergy and Infectious Diseases.

She joined the NIH Division of Biologics Standards (DBS) in 1960 in the Laboratory of Viral Immunology. Hopps worked with Drs. Parkman and Meyer on the Rubella vaccine and the patented Rubella antibody test.

Hopps authored or co-authored more than 89 articles, was awarded two patents (her second was for the BS-C-1 cell line that she developed), and was the national president of Graduate Women in Science. The BS-C-1 continuous cell line developed by Hopps was made from African green monkey kidney cells. The BS-C-1 is still used today and is suitable for propagating several viruses, including polio, measles, Rift Valley fever, respiratory syncytial, Coxsackie A9, O'Malley's A-1 agent, and simian agents 1, 4 and 5. Thanks to Hopps’ work, the BS-C-1 continuous cell line provides the virologist with another tool for diagnostic and research work and perhaps for the large scale cultivation of viral agents for vaccines.