PeerJ Author 100 Points Contributions by role Author 100 Contributions by subject area Biochemistry Evolutionary Studies Genetics Molecular Biology Zoology Zhengxin Sun PeerJ Author Summary Ecology Editorial Board Member Past or current institution affiliations Queen's University PeerJ Contributions Articles 1 April 7, 2020 A real-time PCR assay to accurately quantify polar bear DNA in fecal extracts Kristen M. Hayward, Michelle P. Harwood, Stephen C. Lougheed, Zhengxin Sun, Peter Van Coeverden de Groot, Evelyn L. Jensen https://doi.org/10.7717/peerj.8884 PubMed 32292653