Proteobakteriler

This scanning electron micrograph (SEM) depicted four views of Gram-negative Neisseria gonorrhoeae bacteria. Under this highly-magnified view, details of the protective, adhesive matrix, which this colony had secreted is revealed. This molecular matrix consists of polymeric constituents known as the extracellular polymeric substance, or EPS. Typically, these cocci appear as paired diplococci, which have been outlined in color. See PHIL 10248 for a black and white version of this image.Created: 1973

This scanning electron micrograph (SEM) depicted four views of Gram-negative Neisseria gonorrhoeae bacteria. Under this highly-magnified view, details of the protective, adhesive matrix, which this colony had secreted is revealed. This molecular matrix consists of polymeric constituents known as the extracellular polymeric substance, or EPS. See PHIL 10250 for an enlarged view of the colorized inset, which distinguishes the diplococcal pairs.Created: 1973

This scanning electron micrograph (SEM) depicted three views of a single Gram-negative Neisseria gonorrhoeae bacterium. Under this highly-magnified view, the roughened texture of the bacterium’s cell wall is made visible. As a Gram-negative bacterium, N. gonorrhoeae possess a thinner cell wall than its Gram-positive cousins, composed of peptidoglycan molecular layers that are sandwiched between a lipid membrane layer.Created: 1973

Electron micrograph of Neisseria gonorrhoeae bacteria, the causative agent of gonorrhea; magnification 100,000X.Created: 1971

This 1976 transmission electron micrograph (TEM) depicted a hypertrophic peritoneal mesothelial cell of mouse that had been experimentally infected intraperitoneally with Orientia tsutsugamushi rickettsial micro-organisms. In this photomicrograph there were several organisms visible free within the mesothelial cell's cytoplasm.Created: 1976

This 1978 transmission electron micrograph (TEM) depicted a brain capillary of a mouse that had been experimentally infected intravenously with Orientia tsutsugamushi rickettsial micro-organisms. Revealed by this TEM, was the presence of pericapillary hemorrhage and edema. Several of the O. tsutsugamushi organisms were visible within the cytoplasm of a degenerating capillary endothelial cell.Created: 1978

This 1978 transmission electron micrograph (TEM) depicted a brain capillary of a mouse that had been experimentally infected intravenously with Orientia tsutsugamushi rickettsial micro-organisms. This photomicrograph revealed three O. tsutsugamushi organisms visible within the cytoplasm of the host endothelial cell.Created: 1978

This 1978 transmission electron micrograph (TEM) depicted a brain capillary of a mouse that had been experimentally infected intravenously with Orientia tsutsugamushi rickettsial micro-organisms. This TEM revealed that one organism was budding from the luminal surface of a hypertrophic capillary endothelial cell, still covered by a third layer consisting of the host cell's plasma membrane. Others are visible free within the endothelial cell's cytoplasm.Created: 1978

This 1976 transmission electron micrograph (TEM) depicted a hypertrophic peritoneal mesothelial cell of mouse that had been experimentally infected intraperitoneally with Orientia tsutsugamushi rickettsial micro-organisms. In this TEM, several organisms were visible, free within the host cell's cytoplasm. One O. tsutsugamushi appeared within a phagocytic vacuole, still bearing a third outer membrane layer of probable host cell origin.Created: 1976

This 1976 transmission electron micrograph (TEM) depicted a hypertrophic peritoneal mesothelial cell of mouse that had been experimentally infected intraperitoneally with Orientia tsutsugamushi rickettsial micro-organisms. A disintegrating organism was shown within a host cell's phagocytic vacuole.Created: 1976

This 1976 transmission electron micrograph (TEM) depicted a peritoneal mesothelial cell from a mouse that had been experimentally infected intraperitoneally with Orientia tsutsugamushi rickettsial micro-organisms. Captured here in this TEM was the initiation of the process of phagocytosis being carried out on one of the O. tsutsugamushi micro-organisms.Created: 1976

This 1976 transmission electron micrograph (TEM) depicted peritoneal mesothelial cells from a mouse that had been experimentally infected intraperitoneally with Orientia tsutsugamushi rickettsial micro-organisms. This TEM revealed that the extracellular organisms were covered with a distinct third outer membrane of probable host cell origin.Created: 1976

This 1976 transmission electron micrograph (TEM) depicted a hypertrophic peritoneal mesothelial cell of mouse that had been experimentally infected intraperitoneally with Orientia tsutsugamushi rickettsial micro-organisms. This micrograph showed one organism as it was in the process of budding from the luminal cell surface, still covered by a third layer, consisting of the host cell's plasma membrane. Others are visible free within the host cell's cytoplasm.Created: 1976

This 1976 transmission electron micrograph (TEM) depicted a hypertrophic peritoneal mesothelial cell of mouse that had been experimentally infected intraperitoneally with Orientia tsutsugamushi rickettsial micro-organisms. This particular photomicrograph revealed that there were multiple organisms free within the host cell's cytoplasm.Created: 1978

This 1978 transmission electron micrograph (TEM) depicted a brain capillary of mouse that had been experimentally infected intravenously with Orientia tsutsugamushi rickettsial micro-organisms. This photomicrograph revealed that the capillary lumen was partially occluded by a thrombus, and a hypertrophic, degenerating, apparently detached endothelial cell containing several visible organisms free within its cytoplasm.Created: 1978

This 1978 transmission electron micrograph (TEM) depicted a brain capillary of mouse that had been experimentally infected intravenously with Orientia tsutsugamushi rickettsial micro-organisms. In this micrographic view revealed pericapillary edema, the capillary lumen was partially occluded by a thrombus, and flanking the thrombus, a hypertrophic endothelial cell containing a visible organism free within its cytoplasm.Created: 1978

This 1978 transmission electron micrograph (TEM) depicted a brain capillary of mouse that had been experimentally infected intravenously with Orientia tsutsugamushi rickettsial micro-organisms. In this micrographic view, a host cell endothelial cell was shown to contain many organisms free within its cytoplasm.Created: 1978

This 1976 transmission electron micrograph (TEM) depicted a hypertrophic peritoneal mesothelial cell of mouse that had been experimentally infected intravenously with Orientia tsutsugamushi rickettsial micro-organisms. This micrograph captured a dividing organism while it was visible free within the host cell's cytoplasm.Created: 1976

This 1976 transmission electron micrograph (TEM) depicted a hypertrophic peritoneal mesothelial cell from mouse that had been experimentally infected intraperitoneally with Orientia tsutsugamushi rickettsial micro-organisms. This micrograph captured an organism as it appeared within a phagocytic vacuole. An outer third membrane, of probable host cell origin, was disintegrating, leaving behind only its electron-dense remnants.Created: 1976

This 1976 transmission electron micrograph (TEM) depicted a hypertrophic peritoneal mesothelial cell from a mouse that had been experimentally infected intraperitoneally with Orientia tsutsugamushi rickettsial micro-organisms. This micrograph captured an organism as it appeared within a phagocytic vacuole, still bearing a third outer membrane layer of probable host cell origin.Created: 1976

This 1976 transmission electron micrograph (TEM) depicted a peritoneal mesothelial cell from a mouse that had been experimentally infected intraperitoneally with Orientia tsutsugamushi rickettsial micro-organisms. In this particular field of view, an organism was photographically captured as it was budding from the luminal cell surface, while still covered by a third layer consisting of the host cell's plasma membrane.Created: 1976

This 1978 transmission electron micrograph (TEM) depicted a brain capillary of mouse that had been experimentally infected intravenously with Orientia tsutsugamushi rickettsial micro-organisms. In this particular field of view, a hypertrophic capillary endothelial cell contained one visible organism free within its cytoplasm. The adjacent endothelial cell was of normal thickness.Created: 1978

This 1976 transmission electron micrograph (TEM) depicted a brain capillary of a mouse that had been experimentally infected intravenously with Orientia tsutsugamushi rickettsial micro-organisms. Adhering to the luminal surface of the capillary's endothelium was a large macrophage containing multiple organisms free within its cytoplasm.Created: 1978

This 1976 transmission electron micrograph (TEM) depicted an extracellular Orientia tsutsugamushi rickettsial micro-organism, covered with a distinct third outer membrane of probable host mesothelial cell origin. The specimen from which this image was obtained, was extracted from the peritoneal cavity of experimentally infected mouse.Created: 1976