Fatal pulmonary hemorrhage associated with RTX toxin producing Actinobacillus equuli subspecies haemolyticus infection in an adult horse. - Pusterla N; Jones ME; Mohr FC; Higgins JK; Mapes S; Jang SS; Samitz EM; Byrne BA (Journal of veterinary diagnostic investigation : official publication of the American Association of Veterinary Laboratory Diagnosticians, Inc, 2008)