Abstract
Progressive post-mortem changes were observed, with fibre optic endoscopy, in the abomasum of uninfected sheep and sheep infected with H. contortus. Loss of epithelial cells was observed 14 to 16 min after death in the uninfected sheep. The loss exposed the underlying lamina propria. This loss became more widespread as the time after death increased. Epithelial cell loss was observed earlier (as early as 6 min after death) in the infected sheep. Three of the infected sheep also displayed dispersal of alkaline phosphatase activity 30 min after death. The present work shows that post-mortem changes can occur quite quickly in animals, especially infected animals, and emphasizes the importance of rapid removal of tissue from animals after death.
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