[Morphometric proof of function-related aging].

In a new book of W. Frolkis and co-workers there is emphasized the dependence of aging processes on the cell functions. Besides always demonstrable universal mechanisms each kind of cell shows its specific aging in dependence on its function. This is the case in different tissues and organs too. We show that in muscle tissues, in the comparison of the kidney with the submaxillary gland and in the appearance of collagen type I and III in the anterior and middle part of the human vocal cord.