Moby Thesaurus II by Grady Ward, 1.0:

38 Moby Thesaurus words for "cytology":
   aerobiology, agrobiology, anatomy, astrobiology, bacteriology,
   biochemics, biochemistry, biochemy, bioecology, biological science,
   biology, biometrics, biometry, bionics, bionomics, biophysics,
   botany, cell physiology, cryobiology, cybernetics, ecology,
   electrobiology, embryology, enzymology, ethnobiology, exobiology,
   genetics, gnotobiotics, life science, microbiology,
   molecular biology, pharmacology, physiology, radiobiology,
   taxonomy, virology, xenobiology, zoology