Results 321 to 330 of about 447,313 (350)

Viral diversity and dynamics in an infant gut

Research in Microbiology, 2008
Metagenomic sequencing of DNA viruses from the feces of a healthy week-old infant revealed a viral community with extremely low diversity. The identifiable sequences were dominated by phages, which likely influence the diversity and abundance of co-occurring microbes. The most abundant fecal viral sequences did not originate from breast milk or formula,
Breitbart, Mya, Haynes, Matthew, Kelley, Scott, Angly, Florent, Edwards, Robert, Felts, Ben, Mahaffy, Joseph, Mueller, Jennifer, Nulton, James, Rayhawk, Steve, Rodriguez-Brito, Beltran, Salamon, Peter, Rohwer, Forest   +12 more
openaire   +3 more sources

Diverse viral cas genes antagonize CRISPR immunity

Nature
Prokaryotic CRISPR-Cas immunity is subverted by anti-CRISPRs (Acrs), which inhibit Cas protein activities when expressed during the phage lytic cycle or from resident prophages or plasmids1. Acrs often bind to specific cognate Cas proteins, and hence inhibition is typically limited to a single CRISPR-Cas subtype2.
Mark A. Katz, Edith M. Sawyer, Luke Oriolt, Albina Kozlova, Madison C. Williams, Shally R. Margolis, Matthew Johnson, Joseph Bondy-Denomy, Alexander J. Meeske   +8 more
openaire   +2 more sources

The Role of Viral Diversity in HIV Pathogenesis

Journal of Acquired Immune Deficiency Syndromes & Human Retrovirology, 1995
From the time of seroconversion, patients who retain a high viral load are known to progress more rapidly to AIDS than individuals who have lower levels of HIV. Increased viral load is accompanied by decreasing CD4 cell numbers, and CD4 cell counts are therefore widely used as a diagnostic marker or predictor of progression in HIV patients.
openaire   +3 more sources

Viral Diversity, Evolution, and Selective Pressure

2019
The mechanisms of norovirus evolution are complex owing to the diversity among and within norovirus genogroups and genotypes. Evolutionary and epidemiological patterns vary among norovirus groups. Evolution in GII.4 noroviruses is more well-characterized than any other group, and several potential mechanisms of evolution have been described including ...
Angelique Ealy, Kari Debbink
openaire   +1 more source

Vaccines and viral antigenic diversity.

Revue scientifique et technique (International Office of Epizootics), 2007
Antigenic diversity among ribonucleic acid (RNA) viruses occurs as a result of rapid mutation during replication and recombination/reassortment between genetic material of related strains during co-infections. Variants which have a selective advantage in terms of ability to spread or to avoid host immunity become established within populations ...
openaire   +1 more source

Environmental microbiology: Viral diversity on the global stage

Nature Microbiology, 2016
Viruses, once thought of only as purveyors of disease, take centre stage, from the human microbiome to the oceans, as archives of global diversity and drivers of biogeochemical cycles.
openaire   +2 more sources

Racial and socioeconomic disparities in lung cancer screening in the United States: A systematic review

Ca-A Cancer Journal for Clinicians, 2021
Ernesto Sosa, Dan J Raz, Virginia Chih-Yi Sun   +2 more
exaly  

The rapidly changing landscape in mature T‐cell lymphoma (MTCL) biology and management

Ca-A Cancer Journal for Clinicians, 2020
Enrica Marchi
exaly  

Prevotella diversity, niches and interactions with the human host

Nature Reviews Microbiology, 2021
Adrian Tett, Edoardo Pasolli, Giulia Masetti   +2 more
exaly  

Microbial diversity in extreme environments

Nature Reviews Microbiology, 2021
Wen-Sheng Shu, Li-Nan Huang
exaly