Expression and role of sodium, potassium, chloride cotransport (NKCC1) in mouse inner medullary collecting duct (mIMCD-K2) epithelial cells.

Loop-diuretic-sensitive 86Rb+(K+) transmembrane fluxes were determined in cells of a mouse inner medullary collecting duct cell line (mIMCD-K2). The furosemide-sensitive (0.1 mM) influx was a substantial fraction of the total influx (0.