title: Ultrastructure of Polyangium cellulosum.
abstract: Polyangium cellulosum was examined with the transmission electron microscope and the scanning electron microscope. Freeze-fracturing and critical-point-drying techniques were employed with the latter instrument. Critical-point drying seemed to eliminate the distortion of cells and fruiting bodies. These instruments and techniques allowed for a detailed comparison of cell and fruiting-body ultrastructure. Lipid storage materials and mesosomes were found to be constant cell particulates in both vegetative cells and in the shortened myxospores.
mesh_terms: D002473:Cell Wall / Q000648:ultrastructure; D005612:Freeze Drying; D005614:Freeze Fracturing; D008055:Lipids; D008854:Microscopy, Electron; D008855:Microscopy, Electron, Scanning; D009231:Myxococcales / Q000648:ultrastructure*; D013171:Spores, Bacterial / Q000648:ultrastructure
chemical_list: D008055:Lipids