In the K-Ras(G12C) inhibitor 12 from September 2012 to September 2013, uteri from cows with pyometra were sent to us by the Danish Crown slaughterhouse, Tønder, Denmark and arrived within 72 h of slaughter. The uteri were cooled to 4 °C at the slaughterhouse and during transport. The uteri were examined upon arrival to confirm the diagnosis, and information on calving dates was retrieved from the Central Husbandry Register, an elaborate system of animal identification and registration, which is owned by the Danish Ministry of Food, Agriculture, and Fisheries. A case was included in this study if the uterine mucosa was inflamed, if the uterus was enlarged owing to accumulated pathological exudates, and if a corpus luteum was present. Uteri from cows that were 21 days or less postpartum were discarded. Specimens containing macerated foetuses were also omitted. In total, 21 uteri were sampled. The sampled uteri were from cows that were on average 302 days postpartum at the time of slaughter.
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