title: The isolation and characterization of subcellular fractions from pigmented and unpigmented cells of Rhodopseudomonas spheroides.
mesh_terms: D020130:Bacterial Chromatophores / Q000032:analysis*; D002499:Centrifugation, Density Gradient; D010858:Pigmentation; D012241:Rhodopseudomonas / Q000254:growth & development*