History of Biology and Biotechnology, History of Medicine, History of Agriculture, in East Asia (Japan, Korea) and the United States. Working on a dissertation about the global history of the development of typhoid vaccines since the 1920s.

Currently in Visiting Fellowship, Department of History of Science and Technology, Johns Hopkins University. (2024. 08. - 2025. 07.)

PUBLICATIONS
- Hwang, Kyoryen. (2023). Sorting Sex, Controlling Sex: Masui Kiyoshi’s Chicken Research and Experimental System, 1915-1950. History and Philosophy of the Life Sciences 45(24), 1-25.
- Hwang, Kyoryen. (2021). “Wonjin Rayon Disease” and Two Scientific Lives. Journal of Science & Technology Studies, 21(1), 128-162. (In Korean).