The initial period may be no obvious disease symptoms, late intrinsic renal cell damage can occur, the performance of renal proteinuria, hematuria, or renal insufficiency.
此病初期期可无明显症状，后期可出现肾脏固有细胞损伤，表现为肾性蛋白尿、血尿，甚至肾脏功能不全。
2
A type of variable star whose period of variation is tightly related to its intrinsic luminosity.