. Invasive strains predominated in the dogs of this
study. Only keratitis strains had visible adverse effects on epithelial
cells without overt cytotoxicity, suggesting virulence
strategies affecting live corneal epithelial cell health are selected
for among keratitis strains. (Invest Ophthalmol Vis Sci.
2009;50:729 –736) DOI:10.1167/iovs.08-2358