\sˌiːˈe͡ɪt͡ʃ fˈɪfti ɐsˈe͡ɪ], \sˌiːˈeɪtʃ fˈɪfti ɐsˈeɪ], \s_ˌiː__ˈeɪ_tʃ f_ˈɪ_f_t_i_ ɐ_s_ˈeɪ]\
Definitions of CH50 ASSAY
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Usual screening assay for complement. Dilutions of the serum to be tested are added to antibody-coated erythrocytes and the percentage of lysis is measured. The values are expressed by CH50, hemolytic complement units per milliliter, which is the dilution of serum required to lyse 50 percent of the erythrocytes in the assay.
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- That portion electromagnetic spectrum immediately below visible range extending into x-ray frequencies. longer near-biotic vital necessary for endogenous synthesis of vitamin D and are also called antirachitic rays; the shorter, ionizing wavelengths (far-UV or abiotic extravital rays) viricidal, bactericidal, mutagenic, carcinogenic used as disinfectants.