We measured the following number of cells per individual ‒ birds:52-71 in trachea, 88-274 in livers, 46-257 in duodenums, 332-521 in kidneys and 2-102 in skin; mammals: 37-89 in trachea, 70-238 in livers, 37-295 in duodenums, 9-600 in kidneys, 13-166 in skin.
