Thelma Dunnebacke Dixon

Thelma Dixon

Title: Research Scientist
Company: California Department of Public Health
Location: Berkeley, California, United States

Thelma Dunnebacke Dixon, Research Scientist at the California Department of Public Health, has been recognized by Marquis Who’s Who Top Scientists for dedication, achievements, and leadership in biology and zoology.

Born to Frederick Charles Dunnebacke and Thelma Hudson Dunnebacke in Nashville, TN, in 1925, Dr. Dixon made sure that, no matter her accomplishments, she never forgot her roots. She believes she takes after her mother, whom she deems an “old-fashioned Southern lady,” and feels extremely blessed by her family history, as well as her husband, Jonathan S. Dixon, and her children, James Dixon, Lindsay Ann, and Frederick Charles. She also considers herself lucky to have found a field she continues to enjoy to this day: biology and zoology.

Dr. Dixon started her career at Washington University, earning a Bachelor of Arts in 1947, a Master of Arts in 1949, and a PhD in 1954. Upon graduation, she jumped right into the field and joined the virus laboratory at the University of California, Berkeley, followed by a position as a research scientist at the Viral and Rickettsial Disease Laboratory of the California Department of Public Health. Some of her greatest accomplishments include identifying a new species of free living amoeba, named Naegleria Dixoni for her, and becoming a grantee of the National Institutes of Health and the National Science Foundation. Although Dr. Dixon officially retired in 1976, she continues to conduct research in her own laboratory. Her efforts have been featured in various editions of Who’s Who in America, Who’s Who in Science and Engineering, Who’s Who in the West, and Who’s Who of American Women.

In her spare time, Dr. Dixon enjoys hand crafts, photography, gardening, and painting. She is a member of the American Association for the Advancement of Science, the American Society of Cell Biology, the Society of Protozoologists, the Society of Tissue Culture, and the Electron Microscope Society.

For more:

Press Release

Lifetime Achievement

Contact Dr. Dixon


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