dextrose vs glycogen

dextrose

noun
  • The naturally-occurring dextrorotatory form of glucose monosaccharide molecule. 

glycogen

noun
  • A polysaccharide that is the main form of carbohydrate storage in animals; converted to glucose as needed. 

How often have the words dextrose and glycogen occurred in a corpus of books? (source: Google Ngram Viewer )