First person – De-Li Xu

First person is a series of interviews with the first authors of a selection of papers published in Biology Open, helping early-career researchers promote themselves alongside their papers. De-Li Xu is first author on ‘Seasonal variations in cellular and humoral immunity in male striped hamsters (Cricetulus barabensis)’, published in BiO. De-Li conducted the research described in this article while a PhD student in Dehua Wang's lab at the Institute of Zoology, Chinese Academy of Sciences. He is now a doctor, investigating ecological immunology in small mammals.