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Bovine Digital Dermatitis. (A) A characteristic bovine digital dermatitis lesion on the left rear foot of a female adult Holstein cow; (B) M4.1 digital dermatitis lesion on the rear foot of a female adult Holstein cow; (C) Cross-section of the inactive lesion in (B), showing a central area of active hyperemia and congestion under the crust-like scab. This lesion was positive for the presence of spirochetes. Images generated from author’s research, previously unpublished.
