Strain

Strains
Model of successive binary fission in E. coli
A "strain" of E. coli is a family with some particular characteristics that make it recognizable from other E.
Full article >>>

Strains of HIV (designated "R5") bind the coreceptor CCR5. These are the strains that are most infectious.
Strains of HIV (designated "X4") bind the coreceptor CXCR4.
Full article >>>

Strain
Pure culture of microorganisms composed of the descendants of a single cell.
Related Terms: Progeny ...
Full article >>>

Strain
An organism that is different from other organisms of the same species due to genetic differences.
Full article >>>

A strain of organisms that will proliferate on minimal medium (compare auxotroph).
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
Full article >>>

Two strains of Drosophila paulistorum developed hybrid sterility of male offspring between 1958 and 1963. Artificial selection induced strong intra-strain mating preferences.
Full article >>>

Flu strains are named after their types of hemagglutinin and neuraminidase surface proteins , so they will be called, for example, H3N2 for type-3 hemagglutinin and type-2 neuraminidase.
Full article >>>

The strain used in this study does not cause disease, but related toxic strains have been associated with an increasing number of human food poisonings.
Full article >>>

The strain of parasite that we are using in the malaria genome project actually was originally obtained from an individual who lived near an airport in Amsterdam.
Full article >>>

Host strain (bacterial): The bacterium used to harbor a plasmid. Typical host strains include HB101 (general purpose E. coli strain), DH5a (ditto), JM101 and JM109 (suitable for growing M13 phages), XL1-Blue (general-purpose, ...
Full article >>>

biotype. A strain of a species that has certain biological characters separating it from other individuals of that species.
blackarm. Bacterial blight lesions on stems.
blank. Nut with no kernel-consists of only the collapsed pellicle (skin).
Full article >>>

a homozygous strain produced by inbreeding
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row
What Topic Is Your BIOLOGY Paper On?
Full article >>>

1. The dead S strain had been reanimated/resurrected.
2. The Live R had been transformed into Live S by some "transforming factor".
Further experiments led Griffith to conclude that number 2 was correct.
Full article >>>

Ecotype a genetic strain of a population that is adapted to the unique local environmental conditions
(eco oikus = house) ...
Full article >>>

Another influential strain of Islamist thought came from the Wahhabi movement in Saudi Arabia.
Full article >>>

Auxotrophic mutant A bacterial strain which has a mutation in at least one of the enzymes in a biochemical pathway responsible for synthesising an essential substance, for example an amino acid.
Full article >>>

Strains of fd can be distinguished based on the E.coli strain from which they were isolated: fd K from E.coli K and fd B from E.coli B.
The results of plaque assays of fd K on each E.coli K and E. coli B are diagrammed.
Full article >>>

This is achieved by superimposing the locus of interest on the genetic background of another by first crossing two inbred lines followed by extensive (about 20 generations) backcrossing hybrids to one parental line (the background strain) while ...
Full article >>>

He observed that heat-killed S strain bacteria injected into mice did not kill them. When he injected a mixture of heat-killed S and live R bacteria, the mice died. Moreover, he recovered living S bacteria from the carcasses.
Full article >>>

A group of planktonic tunicates that secrete a gelatinous house, used to strain unsuitable particles (large particles are rejected).
Full article >>>

Strains of mice having natural mutations similar to human ones may serve as models of such conditions. Scientists can also create mouse models by transferring new genes into mice or by inactivating certain existing genes in them.
Full article >>>

stress Physical, chemical, or emotional factors that place a strain on an animal. Plants also experience physiological stress under adverse environmental conditions.
stress-related disease See stress shock.
Full article >>>

In primitive chordates the pharyngeal slits are used to strain water and filter out food particles; in fishes they are modified for respiration. Most terrestrial vertebrates have pharyngeal slits only in the embryonic stage.
Full article >>>

Insect resistant (plants): Tolerant of, or resistant to, insect attack (as in plants). individuals from strains whose ancestors had not been exposed to the pesticide.
Full article >>>

Nicked circle (relaxed circle). During extraction of plasmid DNA from the bacterial cell, one strand of the DNA becomes nicked. This relaxes the torsional strain needed to maintain supercoiling, producing the familiar form of plasmid. (See Plasmid.) ...
Full article >>>

A nutritional mutant that is unable to synthesize and that cannot grow on media lacking certain essential molecules normally synthesized by wild-type strains of the same species.
Aves ...
Full article >>>

We have embarked on a detailed study of the structure and mechanism of PETN reductase from a strain of Enterobacter cloacae.
Full article >>>

This relaxes the torsional strain needed to maintain supercoiling, producing the familiar form of plasmid. (See Plasmid.) NIH. See National Institutes of Health. Nitrocellulose.
Full article >>>

Tumor suppressor gene -- genes that normally function to restrain the growth of tumors; the best understood case is for hereditary retinoblastoma.
Full article >>>


'"/>