. The American journal of anatomy. pletely divided illto twOmuchaematcin. The deeply shaded portions ^ • of the cells next the lumen represent the ex- maSSeS bv a strand of granular pro-tent of the mucus stain. • o i toplasm stretching across the cell. The mucus in these cells stains readily in both mucicarmine andmuchfematein, if employed in themanner described for the human car-diac glands. The cells of the lower ends of theglands are much the same as in theyoung animal, but always show aC(msiderable amount of mucin intheir distal zone (Fig. 8B) whichstains strongly in mucicarmine andmuchfem
. The American journal of anatomy. pletely divided illto twOmuchaematcin. The deeply shaded portions ^ • of the cells next the lumen represent the ex- maSSeS bv a strand of granular pro-tent of the mucus stain. • o i toplasm stretching across the cell. The mucus in these cells stains readily in both mucicarmine andmuchfematein, if employed in themanner described for the human car-diac glands. The cells of the lower ends of theglands are much the same as in theyoung animal, but always show aC(msiderable amount of mucin intheir distal zone (Fig. 8B) whichstains strongly in mucicarmine andmuchfematein, although less readilyin the latter than the cells of thesurface. Comparing these cells, now, withthose of the pyloric glands, the differ-ence although still striking, is not sogreat as in the young animal, forwhile the pyloric gland cells aremuch larger than those of the car-diac glands and are cpiite filled with mucin or its antecedent substances,they are nevertheless engaged in the same kind of activity as the cardiac. Fig. 8B. Transverse section of deeperend of cardiac; gland from adult 1000. See Fig. 8A. 1:^8 The Cardiac Glands oi# Mammals gland cells and are related to the surface epithelium through a similarperfect transition. The diilercnce is one of degree rather than kind,the cardiac gland cell discharging at a later period of development andwith obvious reluctance, the mucin-forming function which the pyloricgland cell assumes early and performs perfectly throughout life. I have not made an exhaustive comparison of the reactions withsynthetic dyes of the cells composing the pyloric and cardiac glands,but so far as I have gone, they have been similar. I should not be sur-prised, however, if further experiment revealed differences of stainingcapacity, because it is hardly to be expected that imperfectly function-ing secreting cells like those of the cardiac glands would always cor-respond, in the phase of elaboration to which they carried their stored-u
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1901
