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Previous reports by others of resistance of cultured rheumatoid synovial cells to experimental virus infection prompted extension of such studies to rheumatoid fibroblasts from other tissues. Strains of cells derived from rheumatoid skin, synovium and a nodule and from nonrheumatoid skin and synovium were inoculated in vitro with rubella virus (RV). All of the tissues studied proved equally susceptible to RV infection.
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Parker et al. (1972) studied this question.
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