Last updated on June 17th, 2021Most Haemophilus species are normal inhabitants of upper respiratory tract of humans and other animals. The species of Haemophilus that most frequently cause human infections are H. influenzae (respiratory and […]
Last updated on June 17th, 2021Streptococcus pneumoniae (pneumococci) is a part of the normal nasopharyngeal and oropharyngeal flora. It is an important etiological agent of upper and lower respiratory tract infections (URTI and LRTI), bacteremia, and […]
Last updated on June 21st, 2021Various biochemical tests can be performed for the identification of Mycobacteria and Non-tuberculous Mycobacteria. An overview of some of these biochemical tests is mentioned in this blog post. Niacin accumulation […]
Last updated on June 25th, 2021Novobiocin test is used to differentiate coagulase-negative staphylococci (CONS) and presumptively identify the isolate as Staphylococcus saprophyticus (novobiocin resistant). It is usually performed on urine isolates (isolated from women of […]
Last updated on June 21st, 2021Each of the letters in “IMViC” stands for one of these tests. “I” is for indole; “M” is for methyl red; “V” is for Voges-Proskauer, and “C” is for citrate, […]
Last updated on June 17th, 2021MUG is an acronym for 4-methylumbelliferyl-β-D-glucuronide. Since 97% of Escherichia coli strains produce the enzyme β-D-glucuronidase, MUG test can be used for rapid identification of E. coli. Verotoxin-producing E. coli (E. coli […]
Last updated on June 17th, 2021Mueller-Hinton agar (MHA) is the best medium to use for routine antimicrobial susceptibility testing using the Kirby-Bauer disc diffusion method for non fastidious bacteria (both aerobe and facultative anaerobe). The use of media […]
Last updated on July 4th, 2021Pathogens of all four major groups of microbes- bacteria, fungi, viruses and parasites may be found circulating in blood during the course of many diseases. Presence of bacteria in the […]
Last updated on June 11th, 2021Antibiotic susceptibility testing should be performed only on clinically significant isolates, not on all microorganisms recovered in culture. World Health Organization (WHO) recommends the use of modified Kirby-Bauer method for […]
Last updated on June 17th, 2021Whenever you see the name of this test i.e. ‘Triple Sugar Iron Agar‘, you have to remember that it’s a test which has three sugar (lactose, sucrose, and glucose) and also […]
Last updated on June 21st, 2021Pseudomonas species are a group of aerobic, non-spore-forming, Gram-negative rods found in the environment and soil. Only a few species are pathogenic, of which Pseudomonas aeruginosa is most common. Pseudomonas […]
Last updated on May 3rd, 2021HeLa cells are one of the best known continuous tissue-culture cell lines. HeLa cells are widely used in research because they are versatile, readily available, and easy to propagate serially. […]
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