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Reibnegger, G., Fuchs, D., Hausen, A. et al. Unconjugated pteridines and the activation of macrophages by interferon gamma. Cancer Chemother. Pharmacol. 25, 308–309 (1990). https://doi.org/10.1007/BF00684893
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DOI: https://doi.org/10.1007/BF00684893