Functional classification of preliminary fitness factors for murine UTI. Tn-seq preliminary fitness factors are shown by functional categories. Primary analysis of the Tn-seq from mouse bladders identified 201 preliminary fitness factors. The percentage of the 201 preliminary CFT073 fitness factors belonging to each annotated functional category is documented in the pie chart. Categories of transport, unknown, and metabolism represented the largest proportion of hits with 22.9%, 21.4%, and 8%, respectively.