Cell division in Salmonella bacterium
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Cell division in Salmonella bacterium
Salmonella cell dividing. Coloured Transmission electron micrograph of the bacterium Salmonella typhimurium undergoing division by binary fission. Two daughter cells produced by the division are at top and bottom. At centre, the cells are joined by a narrow neck. Through this neck DNA genetic material is passing in a thin strand (yellow); bacteria do not have a nucleus, and the DNA is scattered in the central region of each developing cell. Once each cell has its full compliment of DNA, they separate. Salmonella typhimurium is a common cause of food poisoning (Salmonellosis) in humans, spread in contaminated food. Magnification: X36, 000 at 6x4.5cm size
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6284884
© DR KARI LOUNATMAA/SCIENCE PHOTO LIBRARY
Bacteria Bacterial Bacteriology Bacterium Binary Binary Fission Cell Division Dividing Electron Micrograph Fission Food Poisoning Genetic Material In Bacteria Micro Organisms Microbe Microbes Salmonella Salmonella Typhimurium Transmission Micro Biology
EDITORS COMMENTS
This print showcases the intricate process of cell division in a Salmonella bacterium. The coloured transmission electron micrograph captures the bacterium Salmonella typhimurium undergoing division through binary fission. At the top and bottom, we witness two daughter cells that have been produced as a result of this division. In the center, these cells are connected by a narrow neck, where DNA genetic material is passing through in a thin strand depicted in yellow. Unlike other organisms, bacteria lack a nucleus, so their DNA is scattered throughout the central region of each developing cell. As each cell acquires its complete set of DNA, they eventually separate from one another. Salmonella typhimurium is notorious for causing food poisoning (known as Salmonellosis) in humans when consumed via contaminated food sources. This photograph provides us with an up-close look at this harmful bacterium responsible for such illnesses. The magnification level used to capture this image was X36,000 at 6x4.5cm size using transmission electron microscopy (TEM). It offers valuable insights into bacterial biology and microbiology research fields by highlighting key aspects such as bacterial cell division and genetic material transfer.
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