The American journal of anatomy . Mt&i^&uLi*i^, Fig. 4 Drawing of a preparation of the ducts of the pancreas of the guinea pig, staineu DJ344 their relation to the isr leti f jMene blue injection, showing the system of anastomosing tubules around the duct andLangerhans. X 66. 3*5 346 R. R. BENSLEY ing from the main duct, some from its side branches In othersthere may be large sections of the duct which show no suchbranches, while at other points they may be abundant. Ageseems to have little influence on the numbers. The epithelium of these tubules is composed of low epithelialcells, which appe
The American journal of anatomy . Mt&i^&uLi*i^, Fig. 4 Drawing of a preparation of the ducts of the pancreas of the guinea pig, staineu DJ344 their relation to the isr leti f jMene blue injection, showing the system of anastomosing tubules around the duct andLangerhans. X 66. 3*5 346 R. R. BENSLEY ing from the main duct, some from its side branches In othersthere may be large sections of the duct which show no suchbranches, while at other points they may be abundant. Ageseems to have little influence on the numbers. The epithelium of these tubules is composed of low epithelialcells, which appear cubical when cut across, but are seen to beirregularly polygonal when viewed from the surface of the tubule,. Fig. 5 Duct with branches showing the highly branched tubules connected withthe duct and with an islet. Intra vitam staining with pyronin and neutral 77. one axis of the cell being elongated in the direction of the longaxis of the tubule. The nuclei, hkewise, are oval, their long axiscorresponding to that of the cell. A few mitoses may be observedin these cells. The protoplasm contains numerous mitochondrialfilaments, which may be demonstrated by the acetic osmic bichro-mate method, followed by staining by the acid fuchsin-methylgreen method. Except for these, the protoplasm appears homo- STUDIES ON THE PANCREAS OF THE GUINEA PIG 347 geneous, unless it contains a secretion antecedent, in which casethe portion of the cell along the lumen contains irregular granuleswhich stain with mucicarmine. A few goblet cells may be pres-ent among the epithelial cells, though rarely are these irregular intervals small flask-shaped mucous glands openinto the tubules. The lumen of the t
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1901
