FIELD T-3 

 Columns 62, 63, and 64 



213 Anti-thyroid; a compound which increases the size of the thyroid, or causes hyperplasia, 



hypertrophy, or decreases the iodine content of the thyroid gland; a compound which 

 decreases the activity of the thyroid gland 



214 Anti-vitamin: a compound which prevents or abolishes effects of a vitamin specified as a 



secondary compound in Field D 



215 Astringent: a compound which draws tissues together by precipitating protein 



216 Blood substitute: a compound which restores blood volume (exclusive of cellular or formed 



elements) via osmotic properties such as those of plasma proteins for treatment of shock 



217 Diuretic: a compound which increases formation of urine 



218 Estrogenic: a compound that promotes development of secondary sex organs of the female, 



feminization of pubic hair distribution, growth of mammary glands, etc. 



219 Fibrinolytic: a compound that destroys fibrin 



220 Keratolytic: a compound that destroys the horny layer of the skin 



221 Miotic: a compound which decreases the size of the pupil either by contracting circular 



muscles or relaxing radial muscles of the iris 



222 Mydriatic: a compound that increases the size of the pupil either by contracting radial 



muscles or by relaxing circular muscles of the iris 



223 Narcotic: a compound that produces relief from pain accompanied by sleep or stupor 



224 Oxytocic: a compound that produces contraction of the uterus both in vivo and in vitro 



225 Parasympatholytic; cholinergic blocking agent (an agent showing anti-muscarine-like activity): 



a compound which antagonizes muscarine-like effects of acetylcholine and cholinergic 

 compounds and which prevents effects of post-ganglionlc stimulation of parasympathetic 

 nerves. E. g. , atropine and atropine-like compounds. 



226 Parasympathomimetic; cholinergic agent (an agent showing muscarine-like activity): a 



compound that simulates or synergizes acetylcholine's peripheral action; simulates the effect 

 of post-ganglionic stimulation of parasympathetic nerves. E. g. , mecholyl. 



227 Sympatholytic: a compound that antagonizes the effect of adrenaline (epinephrine) or 



noradrenaline (norepinephrine or arterenol) or other sympathomimetic drug; blocks the effects 

 of sympathetic nerve stimulation. E. g. , dibenamine, priscoline. 



228 Sympathomimetic: a compound that simulates or synergizes effects of adrenaline (epinephrine) 



or noradrenaline (norepinephrine or arterenol). Adrenergic drug; simulates the effects of 

 sympathetic nerve stimulation. 



229 Curariform: a compound that competitively blocks the motor-end plate or myoneural junction; 



simulates the effects of curare, d-tubocurarine, etc. 



230 Antipyretic: a compound that produces a fall in temperature in fever; tends to return the body 



temperature of a hyperpyrexia animal to normal. E. g. , antipyrine. 



231 Depressant of the central nervous system only; hypnotic; sedative: a compound that produces 



sedation and sleep (exclusive of narcotic type of effect, Symbol 223). E. g. , paraldehyde. 



232 Analeptic: a compound that reverses the effects of hypnotics and narcotics; stimulates 



medullary centers of the brain. E. g. , picrotoxin, metrazol. 



233 Cardiac: a compound that stimulates or depresses the heart directly; digitalis-like effect. 



E. g. , cardiac glycosides, khellin. 



234 Gastro-intestinal drug: a compound that affects various functions of the gastro-intestinal 



system; anorexics; cathartics; emetics; constipating agents; and anti-emetics 



235 Ganglionic blocking agent: a compound that antagonizes the nicotine-like action (ganglionic- 



stlmulating effects) of acetylcholine and cholinergic compounds; prevents the effects of 

 preganglionic nerve stimulation. E. g. , TEAC (tetraethyl ammonium chloride). 



236 Nicotine-like drug: a compound that simulates or synergizes nicotine actions of acetylcholine 



and cholinergic drugs; simulates the effects of pre-ganglionic nerve stimulation 



237 Anti-anemic: a compound that prevents, or cures anemia or reduces the severity of the 



disease; returns the blood picture of an anemic organism to normal. 



238 Coagulant: a compound that promotes blood coagulation; prevents, antagonizes, or reduces 



the actions of anti-coagulants 



239 Thyroxin-like drug: a compound that simulates the effects of hormone(s) of the thyroid gland, 



such as a rise in B. M. R. , an increase in oxygen consumption, etc. E. g. , tri-iodothyronine. 



240 Adrenal -corticoid: a compound that simulates effects of adrenal cortical hormones on 



electrolyte, carbohydrate, protein, and skin pigment metabolism; simulates effects on 

 collagenous tissue 

 270 Carcinogenic agent; carcinogen: a compound that induces neoplastic growth, malignant or 

 benign (exclusive of non- neoplastic hypertrophy). Use Symbol 270 only with Symbol 43 or 

 47 of Field T-2. 



170 - 



