饲喂标准纯制饲料的Colworth wistar雌大鼠,常常发生钙盐在肾小管里沉积。这种现象发生在大鼠出生几周后,如果饲喂大鼠商业颗粒饲料,这种问题很少发生。组织检查,在肾皮质部内和髓质部外的肾小管腔里,矿物质沉积物为深染的碱性块,呈同心薄片层状结构外周沉积,沉积处肿大。 Colworth wistar female rats fed standard pure feed often have calcium deposits in the renal tubules. This phenomenon occurs a few weeks after the birth of a rat, which is less likely to occur if commercial rat pellets are fed. Tissue examination showed that in the renal tubular lumen inside the renal cortex and medulla, the mineral deposits were deep-stained alkaline lumps, which were deposited in the periphery of concentric lamellar structures and swollen at the deposits.