The problem of age, growth, and death; a study of cytomorphosis, based on lectures at the Lowell Institute, March 1907 . A B Fig. 15. To Show the Orbital Gland of a Dog. A, with the material toform the secretion accumulated within the cells. B, after loss of the materialthrough prolonged secretion.—From R. Heidenhain after Lavdowsky. secretion, which is to be poured forth by the cells, isto be manufactured. So long as that material forthe secretion is contained in the cells, the cells appear THE CELLULAR CHANGES OF AGE 57 large, and their protoplasmic bodies do not readilyabsorb certain of the
The problem of age, growth, and death; a study of cytomorphosis, based on lectures at the Lowell Institute, March 1907 . A B Fig. 15. To Show the Orbital Gland of a Dog. A, with the material toform the secretion accumulated within the cells. B, after loss of the materialthrough prolonged secretion.—From R. Heidenhain after Lavdowsky. secretion, which is to be poured forth by the cells, isto be manufactured. So long as that material forthe secretion is contained in the cells, the cells appear THE CELLULAR CHANGES OF AGE 57 large, and their protoplasmic bodies do not readilyabsorb certain of the staining matters which themicroscopist is likely to apply to them (Fig. 15, A).When, however, the accumulated raw material hasbeen changed into the secretion and discharged fromthe gland, the cell is correspondingly reduced in bulk,and as you see (Fig. 15, B), it then takes up the stainwith considerable avidity, as does also the nucleus,which has likewise become reduced in size. Thesefacts are very instructive for us, since they proveconclusively that with the microscope we can see atleast part of the peculiarit
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectde, booksubjectoldage
