. The American journal of anatomy. ese cells gives a very feeble reaction, indicating that prozymogen ispresent only in traces. Treated with muchaematein or mucicarminesolution, the cells of the lower expanded extremities of the glands ofthe young pig like those cells which contain numerous rubinophilegranules, either remain unstained or show a faintly-stained distal mar-gin as in Fig. 8A, although the cells of pyloric glands of the sameanimal are filled with mucin in the various stages of its elaboration, andstain intensely in the solutions mentioned. There is thus at this stageapparently ver
. The American journal of anatomy. ese cells gives a very feeble reaction, indicating that prozymogen ispresent only in traces. Treated with muchaematein or mucicarminesolution, the cells of the lower expanded extremities of the glands ofthe young pig like those cells which contain numerous rubinophilegranules, either remain unstained or show a faintly-stained distal mar-gin as in Fig. 8A, although the cells of pyloric glands of the sameanimal are filled with mucin in the various stages of its elaboration, andstain intensely in the solutions mentioned. There is thus at this stageapparently very little ground for assuming any relationship between thecardiac and pyloric glands. The examination of the cardiac glands of the adult animal, however,shows that the failure of the muchsematein test in the young pig is butan example of delayed and imperfect functional activity. In the adult animal the cells of the duct and free surface are muchof the same character as those of the young pig, and the same gradual K. E. Bonsley 137. transition may be observed between the cells of the various parts of the^•?lanch bnt the tells of the gland have altered considerably in character. In the upper portion of the glandwhere are found in the yonng ani-mal cells with a large distal zonetilled with rubinophilous granules,the adnlt gland contains cells witha distinct mass of mucus. Thismass may be confined to the inter-ior of the cell in which case, a pro-toplasmic portion filled with gran-ules intervenes between it and thefree border of the cell, or it mayreaqji the free border in whichcase the granules are clustered„,, ^ ,. , around the proximal end of the Fig. 8A and 813. Transverse sections of ^ deeper end of cardiac glands: A. from youns- niaSS: Or, finally, it may be partiallypig; n, from adult pig. X1000. From prepa- ^ • J i. J rations stained in paracarraine and strong- or Completely divided illto twOmuchaematcin. The deeply shaded portions ^ • of the cells next the lumen re
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1901
