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In 1938, Craigie and Yen adapted Vi phages by selective propagation and used them at their critical test dilutions to differentiate 11 types of B. typhosus. [19] In 1943, Felix and Callow extended the method to Salmonella paratyphi B . in 1943 and differentiated 12 types with 11 phages. [ 20 ]
The Behaviour and Personality Assessment in Dogs (Beteende och personlighetsbeskrivning hund), commonly abbreviated as BPH, is a behavioural assessment developed by the Swedish Kennel Club (SKK) in May 2012 [1] [2] that aims to accurately describe the personality of a dog irrespective of whether it is a working, pet or breeding dog.
Cosmids can contain 37 to 52 (normally 45) kb of DNA, limits based on the normal bacteriophage packaging size. They can replicate as plasmids if they have a suitable origin of replication (ori): for example SV40 ori in mammalian cells, ColE1 ori for double-stranded DNA replication, or f1 ori for single-stranded DNA replication in prokaryotes .
The plaque reduction neutralization test is used to quantify the titer of neutralizing antibody for a virus. [1] [2] The serum sample or solution of antibody to be tested is diluted and mixed with a viral suspension. This is incubated to allow the antibody to react with the virus. This is poured over a confluent monolayer of host cells.
Cosmids are plasmids that incorporate a segment of bacteriophage λ DNA that has the cohesive end site (cos) which contains elements required for packaging DNA into λ particles. Under apt origin of replication (ori), it can replicate as a plasmid.
MS2 tagging is a technique based upon the natural interaction of the MS2 bacteriophage coat protein with a stem-loop structure from the phage genome, [1] which is used for biochemical purification of RNA-protein complexes and partnered to GFP for detection of RNA in living cells. [2]
The integration of phage λ takes place at a special attachment site in the bacterial and phage genomes, called att λ. The sequence of the bacterial att site is called attB, between the gal and bio operons, and consists of the parts B-O-B', whereas the complementary sequence in the circular phage genome is called attP and consists of the parts ...
Site-specific recombination, also known as conservative site-specific recombination, is a type of genetic recombination in which DNA strand exchange takes place between segments possessing at least a certain degree of sequence homology.