flyblow vs germ cell

flyblow

noun
  • The larva of the blowfly, especially when found on rotten meat. 

verb
  • To deposit eggs upon, as a blowfly does on meat; to cause to be maggoty. 

  • To taint or contaminate. 

germ cell

noun
  • A cell that is part of the germ line: a gametocyte, an ovum or a sperm cell. 

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