#steroid  any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects
  supertype:  #organic_compound__organiccompound  any compound of carbon and another element or a radical
  subtype:  #ketosteroid  a steroid containing a ketone group
     subtype:  #androsterone  an androgenic hormone that is less active than testosterone
     subtype:  #estrone__oestrone__theelin__Estronol  a naturally occurring weak estrogenic hormone secreted by the mammalian ovary; synthesized (trade name Estronol) and used to treat estrogen deficiency
     subtype:  #cortisone__Cortone_Acetate  a corticosteroid hormone (trade name Cortone Acetate) normally produced by the adrenal cortex; is converted to hydrocortisone
  subtype:  #sterol__steroid_alcohol  any of a group of natural steroid alcohols derived from plants or animals; they are waxy insoluble substances
     subtype:  #cholesterol__cholesterin  an animal sterol that is normally synthesized by the liver; the most abundant steroid in animal tissues
        subtype:  #HDL_cholesterol  the cholesterol in high-density lipoproteins; the `good' cholesterol; a high level in the blood is thought to lower the risk of coronary artery disease
        subtype:  #LDL_cholesterol__ldlcholesterol  the cholesterol in low-density lipoproteins; the `bad' cholesterol; a high level in the blood is thought to be related to various pathogenic conditions
           subtype:  #oxidized_LDL_cholesterol  LDL cholesterol that has been bombarded by free radicals; it is thought to cause atherosclerosis
     subtype:  #ergosterol  a plant sterol that is converted into vitamin D by ultraviolet radiation
  subtype:  #bile_acid  any of the liver-generated steroid acids and stored with bile
     subtype:  #cholic_acid  an insoluble crystalline acid present in bile
  subtype:  #cardiac_glycoside__cardiacglycoside__cardiac_glucoside__cardiacglucoside  obtained from a number of plants and used to stimulate the heart in cases of heart failure
     subtype:  #digitalis_glycoside__digitalisglycoside__digitalis__digitali__digitalin  a powerful cardiac stimulant obtained from foxglove
        subtype:  #digitoxin  digitalis preparation used to treat congestive heart failure or cardiac arrhythmia
        subtype:  #digoxin__Lanoxin  digitalis preparation (trade name Lanoxin) used to treat congestive heart failure or cardiac arrhythmia; helps the heart beat more forcefully

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