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Found Bacterial 111 times.

Displaying results 1 to 10.

1. Absorbance (optical density)
This is a measure of the amount of light absorbed by a suspension of bacterial cells or a solution of an organic molecule; it is measured by a colorimeter or spectrophotometer . Absorbance values are used to plot the growth of bacteria in suspension culture s and to gauge the purity and concentration of molecules (such as proteins) in solution. Absorbance is defined as a logarithmic function of the percent transmission of a wavelength of light through a liquid.

2. A-factor
A protein which is found in the bacterial genus Streptomyces that helps start the production of streptomycin and the process of morphological differentiation. It is used in biotechnology to induce these functions in mutant strains of Streptomyces that can't produce it themselves.

3. Ames test
A bacterial test for mutagenic carcinogen s.

4. Aminoglycoside antibiotics
A group of antibacterial drugs (such as kanamycin , neomycin and streptomycin ) which are mostly produced by fungi and which contain an amino sugar , and amino- or guanido-substituted inositol ring, and other sugar residues. They are all broad-spectrum antibiotic s that inhibit bacterial protein synthesis by binding to their ribosome s. However, all these drugs are toxic to humans and aren't used except in special situations.

5. Aminoglycoside-3'-phosphotransferase (APH)
A bacterial enzyme which confers resistance to the antibiotic neomycin .The APH gene is used as a selectable marker in genetic experiments, whereby bacterial cells which do not have the gene are eliminated from a population and thus selected against when exposed to neomycin.

6. Anthrax (woolsorter's disease, Bacillus anthracis)
A highly contagious and often lethal bacterial disease that is caused by Bacillus anthracis. It afflicts cattle and sheep and can be transmitted to humans via infected raw meat, blood, or other fluids. Anthrax causes high fever, convulsions, and lung lesions.

7. Antibiogram
The sensitivity pattern of a given bacterial or fungal strain to a specific antibiotic .

8. Antibiotic assay
A test to determine how sensitive a bacterial or fungal strain is to a range of antibiotic s by measuring the microbes' ability to grow in a standard dilution of each chemical.

9. Appendectomy (appendicitis)
This is surgery to remove the appendix because of confirmed or suspected infection of the appendix (appendicitis). In the procedure, an incision about 5 centimeters long is made in the right lower abdomen. The intestine is examined and the appendix is found. Even if the appendix is not inflam ed, it will be removed, unless there is some reason not to do so. The abdominal wall is then closed by suturing together the layers. If there is some reason that surgical removal of the appendix is not possible (e.g. lack of proper facilities), the patient is put on antibiotic s and everyone waits for either the appendicitis to subside or for surgery to become possible. The surgery carries with it anesthesia risks as well as the risk of infection and bleeding. The consequences of not having the treatment include rupture (perforation) of the appendix, which can lead to infection of the inside lining of the abdominal wall (peritonitis). Peritonitis not only increases the length of hospital stay and need for further treatment, but also increases the chance of wide-spread bacterial infection (sepsis), which can be fatal.

10. Bacilli
Rod-shaped bacterial cells.


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