Sentences with phrase «for presence of»

Celiac disease can be definitively diagnosed using a two - step process: Doctors test the patient's blood for the presence of intestine - attacking antibodies activated by gluten, and, if those tests come back positive, they order a biopsy (or series of biopsies) to look for intestinal damage, any evidence of which confirms the diagnosis.

The HPV test checks for the presence of the types of HPV most likely to cause cancer.

At some point between 1999 and 2008, each of the participants also provided at least one blood and urine sample which the scientists analyzed for the presence of various chemicals, including dioxins contained in pesticides, phthalates found in fragrance, plastics, cosmetics and hair spray, plant - derived estrogens, and polychlorinated biphenyls, among others.

Selected nymphal ticks were processed by indirect fluorescent antibody (IFA) staining to evaluate for the presence of intact B. burgdorferi spirochetes.

Louis's Robert Ricklefs first studied this relationship in the early 1990s, using data from microscopic examination of avian blood samples for the presence of parasites, primarily those that cause malaria.

This method, sometimes called «liquid biopsy», can provide guidance for treatment decisions, and can enable monitoring of cancer therapy, and organism - wide screening for the presence of nascent metastatic tumors in drug - treated cancer patients.

Evaluation of 39 plasma samples from prostate cancer patients for the presence of antibodies to XMRV / MLV using recombinant - based XMRV p15E and gp70 chemiluminsescent microparticle immunoassays (CMIAs)[70].

Fluorescence in situ hybridization (FISH) was used to screen for the presence of XMRV genomic sequences in formalin - fixed, paraffin - embedded (FFPE) tissue sections from VP62 (2012) and 19 newly collected tumors (a subset of the 39 individuals in the prospective study).

We use the population BWT to carry out nonreference queries to search for the presence of all known viral genomes and discover human T - lymphotropic virus 1 integrations in six samples in a recognized epidemiological distribution.

The next step would be to look for presence of Lithium - 7 and Boron - 11 — also produced by neutrino spallation in supernovae — in meteorites.

The genetic make - up of each individual was examined for the presence of over 300,000 variations.

The tissues were then paraffin embedded, sectioned, stained with hematoxylin and eosin, and examined for the presence of tissue representatives of all three germ layers.

Here we report that at least 96 % of the protein - coding genes have been identified, as assessed by multi-species comparative sequence analysis, and provide evidence for the presence of further, otherwise unsupported exons / genes.

«We know these foods are beneficial to health, and the 10 - minute method we developed, which can test for the presence of specific compounds linked to these vegetables, will help researchers quantify exactly how much of these molecules are being consumed,» says Marcin Dyba, research associate at Georgetown Lombardi.

The mitochondrial genomes of VP35, VP42, and VP62 were then assembled from recovered mtRNA reads and scanned for the presence of minority SNPs that would suggest the presence of trace contamination from LNCaP or 22Rv1 cell line - associated mitochondrial sequences (Fig. 7C).

The 39 plasma samples corresponding to the individuals identified in the prospective study were screened for the presence of antibodies to XMRV or other MLVs.

Nuclear DNA was quantified using the human - specific AluYb8 assay described in Walker et al. [21], including an internal amplification positive control to test for the presence of PCR inhibitors in the DNA extracts.

No hints for the presence of an additional planetary companion in the two systems were found either from the photometric or radial velocity measurements.

The Global Alliance for Genomics and Health (GA4GH) created the Beacon Project as a means of testing the willingness of data holders to share genetic data in the simplest technical context - a query for the presence of a specified nucleotide at a given position within a chromosome.

It is recommended that patients with AML be screened for the presence of FLT3 mutations before induction therapy.

A narrow band of them in the high - energy spectrum would be a «smoking gun» for the presence of dark matter, says Michelson, but he thinks it's more likely that the dark matter emission would be mixed in with gamma rays from other energy sources in the universe and that scientists such as GLAST pioneer Elliott Bloom will have to work very hard to untangle the GLAST data to find it.

Heidenreich et al evaluated women who received prior RT doses > 35 Gy to the mediastinum for the presence of occult coronary artery disease and discovered elevated rates of stress - induced perfusion defects or wall motion abnormalities on echocardiogram.

Broods from these animals grown at 15 °C were later examined for the presence of any animals displaying a kinker (Unc -124-like) phenotype.

This is taken as proof for the presence of early humans in Central Europe around one million years ago, according to the study's senior author and hobby collector from Hesse.

By examining fetal mouse livers, which are rich sources of red blood cells and their progenitors, Wenqian Hu screened the various stages of red blood cell development for the presence of lncRNAs.

Mice were killed, and ear skin, bladders, and joints were cultured for the presence of spirochetes.

The Colorectal Cancer Moon Shot team is developing a blood - based diagnostic test to screen for the presence of colorectal cancer in a non-invasive manner.

Positive CFT titres are often an indication for the presence of IgM antibodies or very high IgG antibody titres and are therefore an expression for an acute or recent infection, respectively.

Investigators say the diagnostic technique has the potential to help reassure thousands of breast cancer patients that their cancers have not spread to other organs, and could help them avoid the risks and pain currently involved in direct inspections of lymph nodes for the presence of cancerous cells.

These discrepancies, which will help shape future experiments, could point to flaws in the current models and also raise a possibility for the presence of an exotic type of neutrino that has not been detected before.

All samples were analyzed for the presence of 18S rRNA to determine the efficiency of the nucleic acid extraction, amplification, and as an indicator of inhibition.

In a massive undertaking, Whitehead Institute scientists have tested nearly 700 wild yeast strains isolated from diverse environments for the presence of known and unknown prion elements, finding them in one third of all strains.

More recently, additional groups of samples from patients with prostate cancer have been examined for the presence of XMRV with both positive [5] and negative [6, 7] results.

The new AquaDx chip will work with the hand - held MyDx portable analyzer to test for the presence of toxic chemicals or elements in water in about six minutes.

«The good news is that a decrease in sexual function could provide an additional warning sign for the presence of heart disease.»

They randomly chose homes about 2 kilometers apart for the presence of adult mosquitoes...

The same association existed for the presence of multiple erythema migrans lesions (P =.045), providing clinical corroboration that hematogenous dissemination is related to the genetic subtype of B. burgdorferi sensu stricto.

Each volunteer's blood was tested for the presence of molecules that signal oxidative stress, others that act as antioxidants, and nitric oxide metabolites.

A minimum of 20 highpower fields were viewed for the presence of motile spirochetes.

It is currently impractical to monitor most human environments and large areas for the presence of pollutants, explosives, or chemical agents [1].

The evidence for the presence of a mycelial fungus in affected areas of the infected bats was obtained when tissue samples from the Williams Hotel Mine were examined by SEM; this imaging method revealed abundant fungal growth on skin and hair shafts (Fig. 1Ci - iv).

None of the offspring tested positive for the presence of the normal KL2 gene carried by the gene therapy vector.

On March 29, 2010, two astronomers submitted a paper on the confirmation of two planets and presented evidence for the presence of a third planet in an outermost orbit (Gregory and Fischer, 2010 — more below).

A team of astronomers is proposing that huge spiral patterns seen around some newborn stars, merely a few million years old (about one percent our sun's age), may be evidence for the presence of giant, unseen planets.

This finding was sustained after accounting for the presence of mood disorders and substance use disorders, suggesting that parental BD is a key correlate of suicidal ideation and attempts, and that genetic risk for suicidal behavior is not wholly acting through a genetic pathway for mood disorder.»

While many studies provided molecular evidence for the presence of infectious diseases in ancient populations, leading to deep insights into the evolution of such diseases, only a few reports on the recovery of blood from mummified bodies are available.

Currently, we are exploring several environmental samples retrieved from allover the world - ranging from hydrothermal vents in Japan to hot springs in Yellowstone National Park and New Zealand — for the presence of novel archaeal (and bacterial) lineages using cultivation - independent approaches, such as metagenomics and single cell genomics.

Overall, the endometrium is quite a hyperproliferative tissue, continuously being broken down and rebuilt; it is an ideal tissue to investigate for the presence of stem cells.

To check for the presence of this subpopulation of SP cells, we exposed HCT116 to increasing concentrations of Bleomycin and performed Hoechst efflux assay.

From their appearance, galaxies are classified in types as given above, as spiral, lenticular, elliptical, and irregular galaxies, where spirals may be further classified for the presence of a bar (S: spirals, SAB: Intermediate, SB: Barred spirals).