cytoplasm vs cytosome

cytoplasm

noun
  • The contents of a cell except for the nucleus. It includes cytosol, organelles, vesicles, and the cytoskeleton. 

cytosome

noun
  • The cytoplasm within a cell; the cell outside of the nucleus. 

  • A type of cellular organelle which is enclosed by a membrane. 

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