Clostridial myonecrosis, heifer, necropsy image

Portion of a quadriceps muscle, ex situ, of a 7-month-old heifer, showing a dark, red-purple hemorrhage within the fascia (lower left) and an adjacent cross-section of muscle with a deep, dark red area of hemorrhage (upper right). The heifer was found dead, after an acute history of hindlimb lameness. C chauvoei was identified via fluorescent antibody and culture with mass spectrometry (MALDI-TOF) for identification.