Sidney I Davidson

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Economic history has contributed significantly to the formulation of economic theory.* Among the economists who have found history an important source for their ideas are Smith, Malthus, Marx, Marshall, Keynes, Hicks, Arrow, Friedman, Solow, and Becker. Failure to take account of history, as Simon Kuznets (1941) stressed, has often led to a misunderstanding(More)
Basic fibroblast growth factor (FGF) was purified by heparin-Sepharose chromatography from two sources, brain and hepatoma cells. Brain cell-derived basic FGF (brFGF) and hepatoma cell-derived basic FGF (heFGF) were found to exist in multiple forms whose molecular weights depended on whether they were extracted from their respective tissue or cells at(More)
THOMSEN'S disease (myotonia congenita), dystrophia myotonica (myotonia atrophica), and paramyotonia are characterized by the presence of myotonia. As an isolated symptom, myotonia had already been described by Benedikt (1874) and Leyden (1874) when Thomsen (1876) published his paper (following the refusal by the Prussian army medical officers of a(More)
There appear to be at least three growth factors for mouse BALB/c 3T3 cells in human milk. The purification of the predominant one is described in this chapter. Biochemical and immunological studies indicate that this growth factor is probably a form of human epidermal growth factor (EGF). Like EGF, the major human milk-derived growth factor has a molecular(More)
ALTHOUGH comparatively rare, spontaneous cysts of the ciliary body have evoked numerous contributions to the literature. The diagnosis is essentially clinical and differentiation from a melanosarcoma may be very difficult. These cysts were well named pseudo-melanosarcomata by Pagenstecher (1910). Before the report of Fischer (1920), the diagnosis of such(More)