. Quarterly journal of experimental physiology and cognate medical sciences. Fig. is.—Section of pancreas of rat (male) fed with an addition of Ol grm. of sodiumiodide per diem to its ordinary diet during two periods of seven days, but with aweeks intermission. Microphotograph ; magnified 450 diameters. Mallorys Fig. 19.—Section of pancreas of rat (male), the thyroid of which had been removed, fedwith an addition to its ordinary diet of grm. of sodium iodide per diem duringfive days. Microphotograph ; magnified 90 diameters. Mallorys stain. If this section is compared with the nor


. Quarterly journal of experimental physiology and cognate medical sciences. Fig. is.—Section of pancreas of rat (male) fed with an addition of Ol grm. of sodiumiodide per diem to its ordinary diet during two periods of seven days, but with aweeks intermission. Microphotograph ; magnified 450 diameters. Mallorys Fig. 19.—Section of pancreas of rat (male), the thyroid of which had been removed, fedwith an addition to its ordinary diet of grm. of sodium iodide per diem duringfive days. Microphotograph ; magnified 90 diameters. Mallorys stain. If this section is compared with the normal (fig. 4), it will be seen that there is littleor no difference in the amount of zymogen in the alveoli. A section of an islet is seenin the preparation, and it is observable that as usual there is more zymogen in thealveoli adjacent to this than in the rest of the section. Studies on tlie Endocrine Glands 297 days with the usual paste of j^jround rusks, to which 0*05 grni. of sodiumiodide was added.^ This experiment was later repeated on three other rats(Nos. 69, 70, 71), but with ditlerent doses. Hat No. G9, which received01 grm., sufTcrtd from diarrhd-a from the second day onwards, withdiminished appetite. Its weight at the end of the time was, however,hardly diminished. Rat No. 70, to which 0-2 grm. of


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