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FAST REVISION
Physiology
Principal cells in the late distal tubule and cortical collecting tubules are responsible for potassium secretion, which is essential for maintaining electrolyte balance.
Pharmacology
Cisapride can cause QT prolongation when administered along with drugs like ketoconazole which inhibit hepatic cytochrome p-450 CYP 3A4 enzyme.
Dental Materials
High expansion dental stones are designed to expand more than typical dental stones to compensate for the contraction of other materials and ensure a precise fit for restorations.