title: Preparation of freeze-dried cryosections for quantitative X-ray microanalysis of electrolytes in biological soft tissues.
mesh_terms: D000818:Animals; D001001:Anura; D004573:Electrolytes / Q000032:analysis; D004577:Electron Probe Microanalysis / Q000379:methods*; D012867:Skin / Q000032:analysis; D001743:Urinary Bladder / Q000032:analysis; D014965:X-Rays
chemical_list: D004573:Electrolytes