Last updated on July 4th, 2021Tetracyclines are a group of broad-spectrum antibiotics effective against a wide range of Gram-positive, Gram-negative bacteria, and several intracellular bacterial pathogens such as chlamydia, rickettsia, mycoplasma, etc. Tetracyclines are usually […]
Last updated on May 30th, 2021Electron microscope as the name suggests is a type of microscope that uses electrons instead of visible light to illuminate the object. Electromagnets function as lenses in the electron microscope, […]
Last updated on July 4th, 2021Mycobacterium tuberculosis (MTB) is the causative agent of tuberculosis (TB) in humans. It is a slightly curved rod arranged singly or in groups. Mycobacterium tuberculosis grows very slowly, taking up […]
Last updated on May 30th, 2021Fluorescence microscopy is a type of light microscope that works on the principle of fluorescence. A substance is said to be fluorescent when it absorbs the energy of invisible shorter […]
Last updated on June 21st, 2021Corynebacterium diphtheriae also known as Klebs-Löffler bacillus is a Gram-positive bacillus responsible for causing diphtheria. Once a major cause of illness and death among children, diphtheria became a rare disease after […]
Last updated on June 11th, 2021Dark-field microscopy is a technique that can be used for the observation of living, unstained cells and microorganisms. In this microscopy, the specimen is brightly illuminated while the background is […]
Last updated on June 21st, 2021Starch hydrolysis test is used to determine if the organism is capable of breaking down starch into maltose through the activity of the extra-cellular α-amylase enzyme. Starch, the most important […]
Last updated on June 11th, 2021Slide-culture is a rapid method of preparing fungal colonies for examination and identification with little disturbance as possible. Fungal isolates are grown directly on the slide on a thin film […]
Last updated on May 30th, 2021Biological safety cabinet (BSC) is an engineering control intended to protect laboratory workers, laboratory environment and work materials from exposure to infectious or biohazardous aerosols and splashes. Such aerosols and […]
Last updated on May 30th, 2021Amies transport medium is a widely used and effective semisolid medium for the transportation of swab specimens to the microbiology laboratory. Placing swabs in a moist container or transport medium […]
Last updated on June 26th, 2021Plasmids are extra-chromosomal genetic elements that replicate independently of the host chromosome. They are small, circular (some are linear), double-stranded DNA molecules (mostly) that exist in bacterial cells and in […]
Last updated on June 21st, 2021The autoclave is a sealed device (similar to a pressure cooker) that kills microorganisms using saturated steam under pressure. The use of moist heat facilitates the killing of all microorganisms, […]
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