Abstract
Many explorations on the deposition of calcium salt have been made in order to make clear the calculus formation, but non of them are yet satisfactory . For explanation of the formation of the calculus, there are two concepts. The one has connected to organic substances in calculus, the other to inorganic substances. The purpose of our study was to attempt to define the mechanism of the formation of solid substances, .\urinary calculus (1), bile concrement, salivary calculus (2), egg shell, blood coagulation, labreaction, gastric calculus, further igneous rocks (3), and snow crystallf orm (4).It was generally accepted that at the early stage of calculus formation in urinary canal, the thin calcium salt called “Ca-plaque” was formed on the surface of mucosus membrane of kidney pelvis, where erosion was observed (5).In the previous report from this laboratory, the electric potential of mucosus membrane was measured after injuring (1). When the membrane surface of horse kidney was slightly sliced, the electric potential became high. By immersing the electrode in urin, the artificial calculus was formed around the positive electrode (1).The present experiment is an effort to contribute something for the explanation of the mechanism of the calculus formation.
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