Tumor Necrosis Factor (cachectin) Is an Endogenous Pyrogen and Induces Production Interleukin 1 Of

From the *Department of Medicine, Tufts University School of medicine and New England Medical Center, Boston, Massachusetts 02111; the *Department of Biology, Tufts University, Medford, Massachusetts 02152; the OLaboratory of Medical Biochemistry, Rockefeller University, New York 10021; and the Departments of U Pharmacological Science and ~Medicinal Analytical Chemistry, Genentech, Inc., South San Francisco, California 94080