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Home2015

Year: 2015

Bacteriology

Quellung reaction: Principle, Procedure and Results

December 29, 2015 Acharya Tankeshwar 2

The Quellung (or Neufeld) reaction is the gold standard technique for serotyping Streptococcus pneumoniae (pneumococcus). This microscopic “precipitin test” can be used to identify pneumococci or to determine the capsular serotype of individual pneumococcal isolates. There […]

Lab Diagnosis of Parasitic Disease

Quantitative Buffy Coat (QBC) Test: Principle, Method and Analysis

December 27, 2015 Acharya Tankeshwar 5

Two methods, thick and thin blood smear microscopy are regarded as the “gold standard” for the diagnosis of malaria. Quantitative Buffy Coat is another direct and rapid test for diagnosis of malaria. It is based […]

Difference Between

Difference between Amoebic dysentery and Bacillary dysentery

December 27, 2015 Acharya Tankeshwar 4

Bacillary dysentery also known as shigellosis is a bacterial disease caused by a group of bacteria called Shigella spp. Other bacterial cause of dysentery are, Vibrio parahaemolyticus, Enteroinvasive E.coli (EIEC), Enterohemrorrhagic E.coli (EHEC), Campylobacter spps, and […]

Difference Between

Difference between Taenia solium and Taenia saginata 

December 21, 2015 Acharya Tankeshwar 5

Taeniasis is the parasitic infection of humans caused by adult tapeworm species; i.e. Taenia saginata (beef tapeworm), Taenia solium  (pork tapeworm) or Taenia asiatica (Asian tapeworm). T. solium and T. saginata have a worldwide distribution but incidence is higher in developing […]

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Bacteriology

Fecal Transplant: Principle, Procedure, uses and risks

December 10, 2015 Acharya Tankeshwar 0

Fecal Microbiota Transplantation (FMT) also known as fecal bacteriotherapy or Intestinal Microbiota Transplantation (IMT),  is a novel approach used to treat Clostridium difficile infections (CDI). It involves infusing intestinal flora via stool of healthy donor  into the […]

Immunology

Widal test: Principle, Procedure, Results, Interpretation, Significance and Limitation

December 1, 2015 Acharya Tankeshwar 23

Widal test is a milestone invention in medicine. This test was devised by Frank Widal in 1896. Widal originally described the test to diagnose Salmonella enterica serotype Paratyphi B infection. Patients infected with S. enterica […]

Anaerobic Bacteriology

Clostridioides difficile: Characteristics, Disease and Laboratory Diagnosis

November 30, 2015 Acharya Tankeshwar 0

Clostridioides (formerly Clostridium) difficile causes life-threatening diarrhea. Clostridioides difficile infection (CDI) is a leading cause of hospital associated gastrointestinal illness.  This infections mostly occur in people who have had  recent medical care (hospitalized or recently hospitalized […]

Bacteriology

Difference between Staphylococcus and Micrococcus

November 24, 2015 Acharya Tankeshwar 8

Staphylococcus and Micrococcus both are Gram positive cocci (GPC).  Both of these cocci are non-motile, non-sporing and Catalase Positive. Both of these organisms are normal flora of skin and mucous membranes of man and animals. Member […]

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Bacteriology

Differences between Neisseria gonorrhoeae and Neisseria meningitides

November 24, 2015 Acharya Tankeshwar 1

Neisseria gonorrhoeae and Neisseria meningitides are Gram negative diplococci (kidney bean-shaped) with flattened sides.  They are characteristically found inside polymorphonuclear leucocytes. They are non-sporing, non-motile and oxidase positive. They have exacting growth requirements and do […]

Bacteriology

Elek Test: principle, procedure and results

November 23, 2015 Acharya Tankeshwar 5

Elek test is an in vitro immunoprecipitation (immunodiffusion) test to determine whether or not a strain of Corynebacterium diphtheriae is toxigenic. A test strip of filter paper containing diphtheria antitoxin is placed in the center […]

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Bacteriology

Differences between Prokaryotic and Eucaryotic Cells

November 21, 2015 Nisha Rijal 0

All living cells can be classified as either prokaryotic or eukarytoic. Prokaryotic cells lack a nucleus and other membrane enclosed structures, whereas eukaryotic cells have such structure. All prokaryotes are single-celled organism and all are […]

Laboratory Diagnosis of Bacterial Disease

Streptococcus Pyogenes (GAS): Characteristics; Virulence Factors, Diseases and Key Tests

November 8, 2015 Acharya Tankeshwar 2

Popularly known as “flesh eating bacteria” , Streptococcus pyogenes is one of the pathogenic gram positive cocci.  Streptococcus pyogenes, or Group A streptococcus (GAS) is mostly known for streptococcal sore throat (strep throat). It is a […]

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