A complement-fixing antigen has been developed, using as source of material CNS tissue from newborn mice infected with the newborn mouse-adapted strain of the Lansing type, MEF1 virus. With this antigen, specific reactions have been obtained with sera from mice, cotton rats, and monkeys immunized with the Lansing-type virus, and from monkeys and chimpanzees convalescent from infection with this virus. Twenty-one of 35 human sera obtained from individuals convalescent from poliomyelitis were positive and 6 of 22 from apparently normal persons having Lansing-neutralizing antibody, while this held true for only 1 of 19 from those having no Lansing-neutralizing antibody. The fact that positive results were found in sera from patients having an infection with poliomyelitis virus of the Brunhilde type and at the same time no Lansing-neutralizing antibody brings up the possibility of the existence of a cross-reaction in complement fixation between the two types.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2136099 | PMC |
| http://dx.doi.org/10.1084/jem.94.2.123 | DOI Listing |
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Quantitative neutralization tests in monkeys were carried out on sera obtained from 7 patients, 3 months, and 3 years after an attack of poliomyelitis. The serum specimens were tested against 100 to 1000 PD(50) of the patient's own strain of virus, recovered during the acute phase of the illness; all the strains were Type 1. The 6 patients, aged 6 months to 13 years, who had a paralytic attack of the disease, all exhibited very high levels of neutralizing antibody at 3 years as well as at 3 months after onset.
View Article and Find Full Text PDFA complement-fixing antigen has been developed, using as source of material CNS tissue from newborn mice infected with the newborn mouse-adapted strain of the Lansing type, MEF1 virus. With this antigen, specific reactions have been obtained with sera from mice, cotton rats, and monkeys immunized with the Lansing-type virus, and from monkeys and chimpanzees convalescent from infection with this virus. Twenty-one of 35 human sera obtained from individuals convalescent from poliomyelitis were positive and 6 of 22 from apparently normal persons having Lansing-neutralizing antibody, while this held true for only 1 of 19 from those having no Lansing-neutralizing antibody.
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