Leukoma

(lu - ko’- mah) [levKo/za, whitene , from /Xevnog, white]. I. An opacity of the cornea the result of an ulcer, wound, or inflammation, and presenting an appearance of ground gla . 2. The term has been used also for albumin. See Leuko- Leukoma in plakia. (lu-kof -mah-in) [Aewcw/za, whitene from, levKog, white]. The name applied to any one of the nitrogenous bases or alkaloids normally developed by the metabolic activity of living organisms, as distinguished from the alkaloidal bodies developed in dead bodies, and called ptomains. From their chemic affinities leukoma ins may be divided into two groups: the uric-acid group, comprising adenin, carn in, guanin, hetero xanthin,hypo xanthin, para xanthin, pseudo xanthin, sperm in, xanthin; and the kreatinin-group, in which are cla ed amphikreatinin, crusokreatinin, xanthokreatinin, and others. The appended table and Novy. is modified from the work of Vaughan KOMAINS. Physiologic Source. Action. Muscle. Meat-extract. Nonpoisonous. Muscle. Liver of dog. Poisonous; paraters. lyzes nerve-cen- Animal and vegetal Nonpoisonous. ti ues; guano. Urine. Brain, muscle, kidney, Nonpoisonous; cito motor. exliver, spleen, certain plants, etc. Fresh meat. Urine. Urine. Poisonous. Spawn of salmon. Muscle. Urine. Salamander. Poisonous. TABLE OF LEUKOMA INS.— Continued. Physiologic Name. Formula. Discoverer. Source. Action. Sperm in. C2H5N (?) Schreiner. Semen, testicles; Char- Nonpoisonous. cot-Leyden crystals; ti ues in leukemia. Unnamed. C3H5N02. Pouchet. Urine. Unnamed. Pouchet. Urine. C7H12N4Oo. Unnamed. C11H24N10O5. Gautier. Muscle. Unnamed. CioHosNnOs. Gautier. Muscle. Unnamed. C18HMN202(C52H96N808PS). Eliacheff. Normal urine. Slightly poisonous. Unnamed. C14H05N303- Eliacheff. Urine in tuberculosis. Poisonous. Urethrobro- See Para xanthin. min. Xanthin. Marcet. Most animal ti ues; Slightly poisonous; QH4N4O2. certain plants; cermuscle stimulant. tain calculi. Xanthocreatin. Gautier. Muscle. Poisonous. C5H10N4O. 361