'Lactose fermenter' diaporamas de présentation

Medically Important Gram negative bacilli (Part 1)

Medically Important Gram negative bacilli (Part 1). Dr Ekta Chourasia Lecturer, Microbiology. 1. Gram-negative rods a. Family Enterobacteriaceae: Medically important species Escherichia coli , S almonella typhi , Shigella sp, Klebsiella spp, Proteus spp Yersinia spp.

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Members of the Family Enterobacteriaceae

Members of the Family Enterobacteriaceae. Citrobacter. Resembles Salmonella but are ONPG (+) & LDC (-) Citrobacter species freundii (UTI, pneumonia, intraabdominal abscess) diversus (neonatal meningitis) amalonaticus (extraintestinal infections) C. freundii S. diversus H2S + -

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Culture Media

Culture Media. ?.? ??? ????. Culture Media :. is a medium (liquid or solid) that contains nutrients to grow bacteria in vitro. Because sometimes we cannot identify with microscopically examination directly, and we do culture for antibiotic sensitivity testing

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Unknowns

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Hektoen agar

Hektoen agar . Final Differential and Selective Media. Hektoen Agar. Used to isolate Salmonella and Shigella species from other enterics Based on the ability of bacteria to use three sugars Lactose Sucrose Salcin Ferric ammonium citrate present in media to detect H2S production.

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