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Microbiology

Image: The FACSAria III cell sorter instrument (Photo courtesy of BD Biosciences).

Immune Cells Adapt Inefficiently in Patients with Uncontrolled HIV

Antibodies derived from a type of immune cell found in unusually high numbers in human immunodeficiency virus-infected individuals with chronically uncontrolled virus levels are less effective at neutralizing HIV than antibodies derived from a different type of immune cell more common in people without HIV.  More...
28 Mar 2016
Image: Photomicrograph of a positive indirect fluorescent antibody (IFA) test for Giardia lamblia parasites (Photo courtesy of Dr. Govinda S. Visvesvara).

Methods Compared for Detection of Fecal Giardiasis

Microscopy for intestinal protozoa after formol-ether or formol-ethylacetate concentration is standard procedure for investigating patients with diarrhea where a protozoan etiology is suspected.   More...
27 Mar 2016
Image: A novel nano-biosensor has been developed for lower-cost, rapid virus detection based on upconversion luminescence resonance energy transfer (LRET) technology and DNA oligo hybridization. Testing takes only 2–3 hours, about 10x faster traditional clinical methods (Photo courtesy of the Hong Kong Polytechnic University).

Innovative Nano-Biosensor Developed for Rapid Detection of Viruses

Scientists have invented a compact, easy-to-use biosensor for rapid, sensitive detection of flu and other viruses by utilizing the optical method of upconversion luminescence resonance energy transfer.  More...
23 Mar 2016
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Rapid Low Cost Urine Test Diagnoses Tuberculosis, Reduces Mortality

A low cost, easy to use, urine test to diagnose tuberculosis among patients with human immunodeficiency virus could help reduce the TB death rate of HIV-positive patients in hospital.   More...
21 Mar 2016
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FDA-Cleared Test Detects Carbapenem Resistance Genes

A qualitative in vitro diagnostic test for fast, accurate, and reproducible identification of five distinct families of carbapenem resistance genes that together represent the most common carbapenemases has been approved for marketing.   More...
21 Mar 2016
Image:  Clostridium difficile colonies after 48 hours’ growth on blood agar plate. By competitive exclusion, healthy gut flora help limit growth of pathogenic yeasts and bacteria. Overgrowth of C. difficile in the gut can cause pseudomembranous colitis, and is the most frequently identified cause of antibiotic-associated diarrhea. (Image courtesy of Dr. Holdeman, Centers for Disease Control & Prevention (CDC; image ID #3647), and Wikimedia.)

Robust Method Developed for Microbiome Analysis

Scientists have developed a technique for genome sequence data analysis that enables to more efficiently and accurately identify differences between metagenomes for a variety of bacterial communities, which can help to study, diagnose, and treat many human diseases. In a new study, the method was successfully tested on intestinal microbiota.  More...
16 Mar 2016
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Laboratory Test for Zika virus Authorized for Emergency Use

Zika fever is a disease caused by Zika virus that is spread to people primarily through the bite of an infected Aedes species mosquito. The most common symptoms of Zika are fever, rash, joint pain, and conjunctivitis.  More...
15 Mar 2016
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The LabMedica Microbiology channel provides the latest news in the fields of epidemiology, bacteriology, virology, and parasitology, all viewed from the unique perspective of Laboratory Medicine.