title: Macromolecular subunits in the walls of marine photosynthetic bacteria.
abstract: Electron micrographs of sectioned and frozen-etched marine species of Chromatium revealed that at least two different patterns of macromolecular subunits are present on the cell wall.
mesh_terms: D001419:Bacteria / Q000166:cytology* / Q000378:metabolism; D001431:Bacteriological Techniques; D002462:Cell Membrane; D002473:Cell Wall; D005613:Freeze Etching; D005615:Freezing; D046911:Macromolecular Substances; D008854:Microscopy, Electron; D010788:Photosynthesis
chemical_list: D046911:Macromolecular Substances