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American journal of physiology . ambour at once inhibited. p. M. Repeated aboveprocedure with same results.(See Fig. 3.) p. M. Repeated proced-ure with same p. M. Repeated procedure with same p. M. Cut longitudinal sUt in intestine just above balloon torelieve air pressure. p. M. Pinched 2 cm. above lesion. Contractions below tran-section at once inhibited. p. M. Dog killed. Area with transection removed. Mucosascraped off with scalpel. Placed in per cent arsenic acid for thirty Figure 4. — Gold chloride stain showing re-generation of nerve fib
American journal of physiology . ambour at once inhibited. p. M. Repeated aboveprocedure with same results.(See Fig. 3.) p. M. Repeated proced-ure with same p. M. Repeated procedure with same p. M. Cut longitudinal sUt in intestine just above balloon torelieve air pressure. p. M. Pinched 2 cm. above lesion. Contractions below tran-section at once inhibited. p. M. Dog killed. Area with transection removed. Mucosascraped off with scalpel. Placed in per cent arsenic acid for thirty Figure 4. — Gold chloride stain showing re-generation of nerve fibres in plexus of dogtwo hundred and thirty days after transec-tion. A to B marks the line of section. Regeneration of AuerhacJis Plexus in the Small Intestine. 359 minutes, in gold chloride for forty-five minutes, and then reduced inI per cent arsenic acid over the water bath for fifteen minutes. Fig. 3 shows the passage of a wave of inhibition across the tran^sected area in the above experiment. In Fig. 4 is presented the ap-. FiGURE 5. — Showing the passage of inhibition across lines of transection one hundredand twent}--two days after the transections were made. Stimulation at 1 was 8 at 2 15 cm. above line of section. In the case of 2 the wave of inhibition passesthrough two transections. pearance of a small portion of the transection after being treatedwith the gold chloride. Fibres may be seen crossing the scar tissueand entering the plexuses on either side. The findings just men-tioned were exactly duplicated in two of the other dogs. No trac-ing was taken from Dog No. 2 because of some question as to theexact location of the transection, the recognition stitches for somereason having disappeared. The transected portions of all fourdogs gave many examples of nerve fibres extending across the number of axones passing across amounts in itself almost to ademonstration of plexus regeneration. Fig. 5 is a tracing from DogNo. 4, one hundred and twenty-two
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Keywords: ., bookautho, bookcentury1800, bookdecade1890, booksubjectphysiology