Iwona Teresa Stroynowski née Fleszar[1] (born 1950) is a Polish-born American immunologist who is Professor in the Department of Immunology and Microbiology at University of Texas Southwestern Medical Center in Dallas, TX.
She discovered the process of gene expression control called attenuation early in her career, the first example of a riboswitch mechanism.
[3] At Stanford, working with Charles Yanofsky, she discovered the attenuation system regulating bacterial amino acid synthesis pathways.
[4] Stroynowski undertook an extended postdoctoral research period with Leroy Hood at California Institute of Technology, during which she changed fields from bacterial genetics to cellular immunology.
Then she became an associate professor at University of Texas Southwestern Medical Center in the Department of Immunology and Microbiology.