74系小鼠是我所实验动物室新培育成功并正在鉴定中的一种黄褐色近交系小鼠。不久前有2只发生颌下炎性肿胀,呼吸时发出“吱吱”声。弓背倦缩,被毛蓬乱。到成年后,小鼠体质逐渐下降,明显消瘦,衰竭而死亡。值得注意的是,与741系小鼠饲养在一起的其它小鼠并未发生此类现象。 2只病鼠颌下炎性肿胀,触之如面团样或有波动感。呼吸时均发出“吱吱”声。年龄6个月,体重22g。 74 line mice are new brown inbred mice that have been successfully cultivated and are being identified in our lab. Not long ago, there were 2 cases of submandibular inflammatory swelling, breathing “creak” sound. Bow dorsiflexion, hair disheveled. To adulthood, mice gradually decline in physical fitness, significantly weight loss, failure and death. It is noteworthy that this phenomenon did not occur in other mice housed with 741-type mice. 2 mice submandibular inflammatory swelling, touching the dough-like or fluctuating. Breathing are issued “creak” sound. Age 6 months, weight 22g.