| Zaffaroni, Alejandro | <person> U.S. Chemist and biochemist, *1923. See: Zaffaroni system. (05 Mar 2000) |
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| Posadas, Alejandro | <person> Argentinian parasitologist, 1870-1902. See: Posadas disease. (05 Mar 2000) |
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| Zaffaroni system | A chromatographic system for the separation of steroids. (05 Mar 2000) |