Iodine accumulating ability as generalized porperty of cells of endodermal origin

Embryonal trachea transplanted in the spleen of adult rats accumulates iodine. The uptake of iodine does not take place in all of the cells, but iodination centers develop and the iodinated cells detach themselves to the lumen thus resembling the holocrine secreation; The results of these experiments indicate that the uptake of iodine appears to be a generalized property of the endoderm.