id author title date pages extension mime words sentences flesch summary cache txt cord-318314-oxlv847d O’Boyle, Nicky Differentiated ovine tracheal epithelial cells support the colonisation of pathogenic and non-pathogenic strains of Mannheimia haemolytica 2020-09-11 .txt text/plain 5482 266 39 Comparison of single representative pathogenic and non-pathogenic ovine isolates over ten time-points by enumeration of tissue-associated bacteria, histology, immunofluorescence microscopy and scanning electron microscopy revealed temporal differences in adhesion, proliferation, bacterial cell physiology and host cell responses. Comparison of eight isolates of bovine and ovine origin at three key time-points (2 h, 48 h and 72 h), revealed that colonisation was not strictly pathogen or serotype specific, with isolates of serotype A1, A2, A6 and A12 being capable of colonising the cell layer regardless of host species or disease status of the host. haemolytica 11, 38 , coupled with a suggested role for the polysaccharide capsule (on which the serotyping classification is based) in cell adhesion 17 , indicates that isolates may be specifically adapted to colonising the airway tissues of discrete hosts. We assessed whether interactions with differentiated OTECs could reflect this species-specificity by analysing colonisation of pathogenic and non-pathogenic isolates of both bovine and ovine origin. ./cache/cord-318314-oxlv847d.txt ./txt/cord-318314-oxlv847d.txt