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Plaque reduction technique for demonstrating neutralizing antibodies for Chlamydia.
Infect Immun
October 1970
The G. W. Hooper Foundation, University of California, San Francisco, San Francisco, California 94122.
Some members of the genus Chlamydia (Bedsonia or psittacosis-lymphogranuloma venereum-trachoma-inclusion conjunctivitis group of microorganisms) produce plaques in monolayers of mouse fibroblast (L-929) cells. Hyperimmune chicken antisera may be capable of specifically reducing plaque counts. When the test was applied to chlamydiae isolated from avian species, the results indicated that different isolates with a common source had similar antigenic reactivity.
View Article and Find Full Text PDFViral susceptibility range of the fathead minnow (Pimephales promelas) poikilothermic cell line.
Appl Microbiol
January 1970
The viral susceptibility range of a poikilothermic cell line derived from the fathead minnow (Pimephales promelas) (FHM) to infection by a number of homoiothermic viruses representing most of the presently recognized viral groups and a member of the psittacosis-lymphogranuloma-trachoma group of agents was studied. All infectious agents, except poliovirus types 1 and 3, infectious bursal agent, and an avian infectious bronchitis virus (IBV) strain, readily multiplied in the FHM cell culture system, producing a detectable cytopathic effect. Although inconclusive evidence was obtained with two other avian IBV strains, these results indicated the ability of the FHM cell culture system to readily support the propagation of a variety of cytopathogenic homoiothermic viral agents.
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