Abstract
ABSTRACTThe germ‐free chickens were mono‐ or dicontaminated with various species of facultative anaerobes and obligate anaerobes isolated from chickens, humans, pigs, and fermentation products, and their sera were studied for agglutinins against these organisms. After contamination, gnotobiotic chickens developed relatively high titers of agglutinins against Streptococcus faecalis var. liquefaciens from a chicken and obligate anaerobes such as Bifidobacterium thermophilum (strain T 111), Bacteroides sp. (Au 21–27), and Fusobacterium (Sphaerophorus) sp. (EBF 59/96p) from chickens, Bacteroides sp. (A 269–5) from a human, and B. thermophilum (P 2–91) and Fusobacterium (Sphaerophorus) sp. (PNC 2–23) from pigs. On the contrary, little or no detectable agglutinins were observed against Bacteroides sp. (Ch 220–17) from a chicken, Bifidobacterium adolescentis and Bifidobacterium bifidum from humans and Lactobacillus casei and Lactobacillus plantarum from fermentation products. Anti‐Escherichia coli agglutinins were sensitive to 2‐mercaptoethanol, but anti‐B. thermophilum agglutinins were not.
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