title: Ultrastructural changes in tissue forms of Leishmania donovani before and after cryopreservation in liquid nitrogen.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000648:ultrastructure; D003593:Cytoplasm / Q000648:ultrastructure; D004121:Dimethyl Sulfoxide / Q000494:pharmacology; D005407:Flagella / Q000648:ultrastructure; D005615:Freezing; D007891:Leishmania / Q000648:ultrastructure*; D008854:Microscopy, Electron; D009584:Nitrogen; D011309:Preservation, Biological; D012270:Ribosomes / Q000648:ultrastructure
chemical_list: D009584:Nitrogen; D004121:Dimethyl Sulfoxide