black disease
柯林斯词典
1. N an infectious necrotic hepatitis in sheep and occasionally cattle caused by to toxins produced by infection with species of Clostridial. Secondary to liver fluke infestation, the disease is characterized by sudden death. So-called because of the black discolouration of subcutaneous tissues due to congestion and haemorrhage seen at post-mortem 黑死病[vet science]
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