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Turco, J., och H H. Winkler. "Role of the Nitric Oxide Synthase Pathway in Inhibition of Growth of Interferon-sensitive and Interferon-resistant Rickettsia Prowazekii Strains in L929 Cells Treated With Tumor Necrosis Factor Alpha and Gamma Interferon." Infect Immun 1993.

Turco, J., och H H. Winkler. "Role of the Nitric Oxide Synthase Pathway in Inhibition of Growth of Interferon-sensitive and Interferon-resistant Rickettsia Prowazekii Strains in L929 Cells Treated With Tumor Necrosis Factor Alpha and Gamma Interferon." Infect Immun 1993.