In thyroid gland, iodine is transpoed into the lumen of the follicles by

Pendrin protein is a chloride-iodide transpoer protein encoded by the gene responsible for Pendred syndrome, impoant in function of thyroid gland, kidney, and inner ear.Endocytosis is defined as the uptake by a cell of material from the environment by invagination of the plasma membrane; it includes both phagocytosis and pinocytosis.Antipo a cell membrane transpo mechanism that transpos two molecules at once through the membrane in opposite directions.Primary active transpo - Active transpo is the movement of all types of molecules across a cell membrane against its concentration gradient (from low to high concentration). In all cells, this is usually concerned with accumulating high concentrations of molecules that the cell needs, such as ions, glucose, and amino acids. If the process uses chemical energy, such as from adenosine triphosphate (ATP), it is termed primary active transpo.Ref: Ganong&;s review of medical physiology; 24th edition; page no-341