Exploiting Autofluorescence and Imaging Flow Cytometry to Quantitatively Phenotype Morphologically Diverse Pathogen Populations Understanding variation in pathogen virulence is a central goal of evolutionary medicine. In the shape-shifting bacterial pathogen, Pasteuria ramosa, virulence is thought to be mediated by specific bacterial morphotype(s). Accordingly, variation in the virulence of Pasteuria infections arises from variation in the absolute/relative abundance of virulence-inducing morphotypes in Pasteuria populations. Hitherto, testing…