Bacteriophages “bacteria-eater” are infectious agents that replicate as obligate intracellular parasites in bacteria with high selectivity. They are the powerful regulators of bacterial...
Month: June 2020
Nocardia species are gram-positive, variably acid-fast, filamentous, and strictly aerobic organisms belonging to the actinomycetes group. Nocardia spp forms branched filaments that extend along the...
Visible morphological changes in cell cultures caused by viral infections are called cytopathic effects (CPE). The degree of visible changes to cells caused by viral infection varies with the type of...
Shell vial cell culture, a centrifuge-enhanced tissue culture assay, is a modification of conventional cell culture for the rapid detection of viruses in vitro. Rapid shell vial cultures are used to...
Radioimmunoassay (RIA) is very sensitive (can detect at a concentration of <0.01 μg/mL) and a specific technique that is used for the quantitative detection of antigens or haptens. RIA is an...
When a person is infected with a pathogen, antibodies are produced against many epitopes of this pathogen. A subset of these antibodies can block infection by a process called neutralization....