Jensen R, Johnson L W, Lauerman L H, Tucker J O, Swift B L, Alexander A F, Hancock H A, Flack D E, Braddy P M, Horton D P
Am J Vet Res. 1982 Aug;43(8):1436-9.
We histologically examined (i) 73 bovine livers condemned by packing house inspectors for telangiectasis, (ii) 15 bovine livers passed by the same inspectors as normal, and (iii) 8 livers from cattle given an injection into their mesenteric veins: 6 with a suspension of agar particles containing viable Haemophilus somnus and 2 with diluent only. The injected cattle were killed and necropsied 2 to 12 days after the inoculations. Of the 73 telangiectatic livers, 57 (78%) had thrombosed and occluded or contracted and empty portal veins (venopathies), whereas 1 of the 15 normal livers contained one microscopic focus of telangiectasis and nearby venopathy. Of the 6 livers injected with suspended particles, all had venopathies and telangiectasis and the 2 control livers had neither.
(i) 73个因毛细血管扩张被肉类加工厂检查员判定不合格的牛肝脏；(ii) 15个被同一名检查员判定为正常的牛肝脏；(iii) 8个接受肠系膜静脉注射的牛肝脏：6个注射含有活菌睡眠嗜血杆菌的琼脂颗粒悬液，2个仅注射稀释剂。接种后2至12天处死并解剖注射的牛。73个有毛细血管扩张的肝脏中，57个(78%)门静脉有血栓形成、闭塞或收缩且空虚(静脉病变)，而15个正常肝脏中有1个含有一个显微镜下可见的毛细血管扩张灶及附近的静脉病变。6个注射颗粒悬液的肝脏均有静脉病变和毛细血管扩张，2个对照肝脏均无。
