[Urea extracts from gram-negative bacteria in indirect hemagglutination reaction. I. Urea extracts from S. typhi, paratyphi B, cholerae suis and Shig. sonnei].
D006090:Gram-Negative Bacteria; D006384:Hemagglutination; D012475:Salmonella / Q000737:chemistry*; D012485:Salmonella typhi; D014508:Urea / Q000737:chemistry*
D014508:Urea
HEMAGGLUTINATION; SALMONELLA/chemistry; UREA/chemistry