The number of immunohistochemistry (IHC)-positive follicles per centimeter squared compared to enzyme-linked immunosorbent assay (ELISA) optical density (OD) values from medial retropharyngeal lymph nodes collected from white-tailed deer (Odocoileus virginianus; n=54) harvested in Michigan, USA from 2015 to 2019 and tested for chronic wasting disease.