Proteus and Providencia Species : Morphology,Diagnosis and Cultural characteristics

Proteus and Providencia Species : Morphology,Diagnosis and Cultural characteristics

The Proteus and Providencia genera belong to the Proteeae of the Enterobacteriaceae family. The members of both these genera are gram negative, motile bacilli, aerobic and facultative anaerobic and can grow in basic media.A characteristic feature that distinguishes tribe Proteeae from other members of Enterobacteriaceae…

Pseudomonas aeruginosa : Morphology,Diagnosis and Cultural characteristics

Pseudomonas aeruginosa : Morphology,Diagnosis and Cultural characteristics

Pseudomonas is a bacteria mostly saprophytic in nature, found in soil, water and other moist environments. It has emerged as an important cause of associated health care and opportunistic infections.Most Pseudomonas clinical isolates are resistant to many antibiotics. Pseudomonas aeruginosa is also a plant pathogen….

Chlamydia trachomatis Laboratory Diagnosis

Chlamydia trachomatis Laboratory Diagnosis

Chlamydiae are obligatory, aerobic, intracellular parasites of eukaryotic cells.Chlamydiae are obligatory, aerobic, intracellular parasites of eukaryotic cells.They are small gram- negative cocci or rod- shaped, non- motile bacteria.Chlamydiae exhibits intermediate characteristics between bacteria and viruses.They are widespread in the natural world and are parasites of…

Normal Flora and Their Various Location in the Body

Normal Flora MLTGEEKS

The internal tissues of a healthy human being, e.g. brain,blood, muscle, etc., are normally sterile or  free of microorganisms.But the surface tissues of the human body that is the skin and mucous membranes are frequently in contact with environmental organisms and become readily colonized by…

How to Interprete Hemolysis in Bacteriology (Alpah,Beta and Gamma Hemolysis)

Hemolysis pn Blood Agar MLTGEEKS

Some bacteria are capable of producing substances (Hemolysin) that breakdown Red blood cells and this ability is useful in classifying these bacteria(Hemolysis test) particular streptococcal species which is more demonstrated in growth media like blood agar.Therefore in order to manifest hemolysis,blood or red blood cells…

DIAGNOSTIC BIOLOGIQUE DE L’INFECTION A CHLAMYDIA

Ici nous allons énumérer cinq techniques pouvant contribuer à diagnostiquer de l’infection à Chlamydiaetrachomanis  :  la détection du génome bactérien par biologie moléculaire avec amplification, avec le « Tests d’amplification génique et d’hybridation moléculaire – Recherche d’ADN ou d’ARN par hybridation moléculaire avec amplification génique (urines,…

Acid Fast organisms not Always Mycobacterium species

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Nowaday,when we hear of acid fast organism,we primarily think of Mycobacterium species such as tuberculosis,leprae etc.           Acid-fast organisms such as members of the genus Mycobacterium are  differentiated and identify using an acid fast stain such as Ziehl Neelsen stain Acid-fastness  refers…