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2. Cross-reactions of normal bovine serums to foot-and-mouth disease virus in plaque-reduction neutralization and radial immunodiffusion;Andersen;Am. J. Vet. Res.,1975
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4. The use of frozen cells in the agar-cell suspension titration technique;Barteling;Arch. ges. Virusforsch.,1972
5. Interferons as modulators of human monocyte-macrophage differentiation. I. Interferon-γ increases HLA-DR expression and inhibits phagocytosis of zymosan;Becker;J. Immunol.,1984