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A strain is a genetic variant or subtype of a microorganism (e.g., a virus, bacterium or fungus). For example, a "flu strain" is a certain biological form of the influenza or "flu" virus. These flu strains are characterized by their differing isoforms of surface proteins.
Bacterial taxonomy is the classification of strains within the domain Bacteria into hierarchies of similarity. This classification is similar to that of plants, mammals, and other taxonomies. However, biologists specializing in different areas have developed differing taxonomic conventions over time.
Methicillin-resistant Staphylococcus aureus (MRSA) is a group of gram-positive bacteria that are genetically distinct from other strains of Staphylococcus aureus. MRSA is responsible for several difficult-to-treat infections in humans.
Since 2001, when a new bacterial or archaeal species is described, a type strain must be designated. [11] The type strain is a living culture to which the scientific name of that organism is formally attached.
Strain OP50 of Escherichia coli is used for maintenance of Caenorhabditis elegans cultures. Strain JM109 is a mutant form of E. coli that is recA and endA deficient. The strain can be utilized for blue/white screening when the cells carry the fertility factor episome. [113]
By mapping the genetic code of particularly virulent strains of Lyme disease bacteria, scientists may have gotten a step closer to figuring out why symptoms persist for months, or even years, in ...
Bacteria (/ b æ k ˈ t ɪər i ə / ⓘ ... Solid growth media, such as agar plates, are used to isolate pure cultures of a bacterial strain. However, liquid growth ...
The strain appears to be unique to Los Angeles and has not been recorded anywhere else, said Dr. Shangxin Yang, a UCLA molecular biologist and clinical microbiologist who is a co-author of the ...