Gram Positive Bacteria

Senegalia sp. (Fabaceae) based on Acevedo 16976 from Brazil. Photo by P. Acevedo.

Lardero, La Rioja, Spain

isolate 52 Bacillus ?simplex Soil 3: Kepa bush creek mud

Senegalia sp. (Fabaceae) based on Acevedo 16976 from Brazil. Photo by P. Acevedo.

Streptococcus gallolyticus subsp. macedonicus New NZ record

Senegalia sp. (Fabaceae) based on Acevedo 16976 from Brazil. Photo by P. Acevedo.

Senegalia sp. (Fabaceae) based on Acevedo 16976 from Brazil. Photo by P. Acevedo.

Senegalia sp. (Fabaceae) based on Acevedo 16903 from Brazil. Photo by P. Acevedo.

Senegalia sp. (Fabaceae) based on Acevedo 16903 from Brazil. Photo by P. Acevedo.

Senegalia sp. (Fabaceae) based on Acevedo 16870 from Brazil. Photo by P. Acevedo.

Senegalia sp. (Fabaceae) based on Acevedo 16870 from Brazil. Photo by P. Acevedo.

Senegalia sp. (Fabaceae) based on Acevedo 16903 from Brazil. Photo by P. Acevedo.

Senegalia sp. (Fabaceae) based on Acevedo 16976 from Brazil. Photo by P. Acevedo.

Longitude (deg): -1.0. Latitude (deg): 53.9. Longitude (deg/min): 1° 0' W. Latitude (deg/min): 53° 60' N. Country: England. Associated species: Trifolium. Identified by: Malcolm Storey. Comment: Galled flower head. Category: standard photograph or close-up. Photographic equipment used: "35mm transparencies (on a variety of films, but Agfa CT18 in the 1960's to early 1980's followed by Fujichrome in the late 1980's.) Transparencies scanned with Minolta Dimage Scan Dual II AF-2820U transparency scanner.".

Electron micrograph of a Listeria bacterium in tissue. See PHIL 2286 for a black and white version of this image.Created: 2002

This image depicted numbers of Bacillus anthracis bacterial colonies, which had been allowed to grow on sheep’s blood agar (SBA) for a 24 hour period. In this particular view you’ll note the appearance of what is termed a "plaque" (arrowhead), which represents an area where the bacteria had been lysed, or destroyed by the application of a localized amount of gamma phage-containing solution. Highly specific to B. anthracis, these gamma phage viruses, i.e., bacteriophages, attacked the B. anthracis bacteria, subsequently leaving this circular plaque devoid of bacterial organisms. The specificity of these gamma phages to B. anthracis makes this a positive test for the presence of this bacterium.Created: 2009

This micrograph depicts Gram-positive C. difficile bacteria from a stool sample culture obtained using a .1µm filter. See PHIL 6260 for a black and white version of this image.Created: 2004

Spores and crystals of Bacillus thuringiensis serovar morrisoni strain T08025 Microscopy by Jim BuckmanFrom Wikimedia Commons

Electron micrograph of a Listeria bacterium in tissue. See PHIL 10828 for a colorized version of this image.Created: 2002

This image depicted numbers of Bacillus anthracis bacterial colonies, which had been allowed to grow on sheep’s blood agar (SBA) for a 24 hour period. Note the classical appearance exhibited in the colonial morphology including a ground-glass, non-pigmented texture with accompanying comma projections from some of the individual rough-edged colonies. In this particular view, you’ll note that a tenacity test had been performed using an iinoculating loop, which proved positive for B. anthracis, causing the colony to ‘stand up’ like beaten egg white.Created: 2009

This micrograph depicts Gram-positive C. difficile bacteria from a stool sample culture obtained using a .1µm filter. See PHIL 9999 for a colorized version of this image.Created: 2004

This micrograph depicts a group of Clostridium tetani bacteria, responsible for causing tetanus in humans.From Wikimedia Commons

Magnified 1125X, this photomicrograph revealed the presence of numerous Gram-negative anaerobic, gram-negative cocci, i.e., round-shaped, Veillonella sp. bacteria.Created: 1972

This image depicted Bacillus anthracis bacterial colonies, which had been allowed to grow on sheep’s blood agar (SBA) for a 24 hour period. Note the classical appearance exhibited in the colonial morphology including a ground-glass, non-pigmented texture with accompanying comma projections from some of the individual rough-edged colonies. In this particular view, you’ll note that a tenacity test had been performed using an iinoculating loop, which proved positive for B. anthracis, causing the colony to ‘stand up’ like beaten egg white.What is anthrax?Anthrax is an acute infectious disease caused by the spore-forming bacterium Bacillus anthracis. Anthrax most commonly occurs in wild and domestic mammalian species (cattle, sheep, goats, camels, antelopes, and other herbivores), but it can also occur in humans when they are exposed to infected animals or to tissue from infected animals or when anthrax spores are used as a bioterrorist weapon.Created: 2009