title: The fraction of the lipid in a biological membrane that is in a fluid state: a spin label assay.
mesh_terms: D000818:Animals; D002784:Cholesterol; D003497:Cyclic N-Oxides; D004578:Electron Spin Resonance Spectroscopy; D008055:Lipids / Q000032:analysis*; D008433:Mathematics; D008566:Membranes / Q000032:analysis*; D008567:Membranes, Artificial; D010713:Phosphatidylcholines; D011817:Rabbits; D012519:Sarcoplasmic Reticulum / Q000032:analysis*; D012995:Solubility
chemical_list: D003497:Cyclic N-Oxides; D008055:Lipids; D008567:Membranes, Artificial; D010713:Phosphatidylcholines; D002784:Cholesterol