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Quantitative Analyses of Certain Enteric Bacteria and Bacterial Extracts II. Discrimination of Sonic Extracts by Interfacial Densitometry of Precipitin Systems

机译:某些肠道细菌和细菌提取物的定量分析II。沉淀素系统的界面密度法鉴别声波萃取物

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Bacterial extracts prepared by ultrasonic disruption were reacted with both narrow- and broad-spectrum reference (homologous) and cross-reacting (heterologous) precipitins produced in rabbits. Quantitation of the reaction was obtained by densitometry of the antigen-antibody interface. Comparisons were made of sonic extracts from various starting populations all equated to the same nitrogen concentrations, and of various nitrogen levels derived from five bacterial population levels prepared separately. Sources of error are probed to show under what circumstances cross-reactions would be of greater magnitude than reference ones. The feasibility was shown of using quantitative densitometry of the interface combined with broadly reacting precipitins to identify bacteria on an intergeneric and interspecies scale. Problems associated with the use of absorbed or monospecific precipitins are explained.
机译:通过超声破坏制备的细菌提取物与兔体内产生的窄谱和广谱参比物(同源)和交叉反应(异源)沉淀蛋白反应。通过光密度测定抗原-抗体界面获得反应的定量。比较了来自各种起始种群的声音提取物,这些提取物都等于相同的氮浓度,并且来自分别制备的五个细菌种群水平的多种氮含量。探究错误源,以表明在什么情况下交叉反应会比参考反应更严重。使用界面的定量光密度法与沉淀蛋白的广泛反应相结合来鉴定属间和种间规模细菌的可行性被证明。解释了与吸收或单特异性沉淀蛋白的使用有关的问题。

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