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The inhibitory effect of adrenalin upon the sphincter of the pupil
Experimental biology and medicine
The sphincter muscle from the eyes of cattle, sheep and hogs was tested as quickly as possible after death. Two methods were used: (a) A strip, containing the sphincter, was cut from the pupillary border of the iris, connected with a lever and kept in a bath of either saline, Ringer's solution or aqueous humor, a t 38 to 40 degrees Centigrade-in some cases with oxygen streaming through. (b) In other cases the sphincter was only partly excised, but connected with the registering apparatus indoi:10.3181/00379727-12-127 fatcat:oxtng2s2hzbylcfjhbqbdtkjfm