#hexose  a monosaccharide that contains six carbon atoms per molecule
  supertype:  #monosaccharide__monosaccharose__simple_sugar  a sugar (like sucrose or fructose) that does not hydrolyse to give other sugars; the simplest group of carbohydrates
  subtype:  #aldohexose  a monosaccharide sugar having six carbon atoms and an aldehyde group
     subtype:  #glucose  a monosaccharide sugar that has several forms; an important source of physiological energy
        subtype:  #corn_sugar.glucose__cornsugar  dextrose made by hydrolysis of cornstarch
        subtype:  #dextrose__dextroglucose__grapesugar  an isomer of glucose that is found in honey and sweet fruits
        subtype:  #blood_sugar__blood_glucose__bloodglucose  glucose in the bloodstream
  subtype:  #ketohexose  a monosaccharide having six carbon atoms and a ketone group
     subtype:  #fructose__fruit_sugar__fruitsugar__levulose__laevulose  a simple sugar found in honey and in many ripe fruits

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