title: Are cell membranes fluid?
mesh_terms: D000128:Acholeplasma laidlawii / Q000166:cytology; D002462:Cell Membrane / Q000032:analysis*; D055598:Chemical Phenomena; D002621:Chemistry; D004926:Escherichia coli / Q000166:cytology; D008055:Lipids; D013057:Spectrum Analysis; D014961:X-Ray Diffraction
chemical_list: D008055:Lipids