About 286,138 results

Mitochondrial phylogenomics provides conclusive evidence that the family Ancyrocephalid...
Parasites & Vectors; Hao CL, Wei NW et. al.

Mar 2nd, 2023 - Unresolved taxonomic classification and paraphyly pervade the flatworm class Monogenea: the class itself may be paraphyletic and split into Polyopisthocotylea and Monopisthocotylea; there are some indications that the monopisthocotylean order Dactylogyridea may also be paraphyletic; single-gene markers and some morphological traits indicate that the family Ancyrocephalidae is paraphyletic and i...

Molecular exploration of fossil eggshell uncovers hidden lineage of giant extinct bird.
Nature Communications; Grealy A, Miller GH et. al.

Mar 1st, 2023 - The systematics of Madagascar's extinct elephant birds remains controversial due to large gaps in the fossil record and poor biomolecular preservation of skeletal specimens. Here, a molecular analysis of 1000-year-old fossil eggshells provides the first description of elephant bird phylogeography and offers insight into the ecology and evolution of these flightless giants. Mitochondrial genomes...

Late Cenozoic cooling restructured global marine plankton communities.
Nature Woodhouse A, Swain A et. al.

Feb 16th, 2023 - The geographic ranges of marine organisms, including planktonic foraminifera1, diatoms, dinoflagellates2, copepods3 and fish4, are shifting polewards owing to anthropogenic climate change5. However, the extent to which species will move and whether these poleward range shifts represent precursor signals that lead to extinction is unclear6. Understanding the development of marine biodiversity pa...

Origination of the modern-style diversity gradient 15 million years ago.
Nature Fenton IS, Aze T et. al.

Feb 16th, 2023 - The latitudinal diversity gradient (LDG) is a prevalent feature of modern ecosystems across diverse clades1-4. Recognized for well over a century, the causal mechanisms for LDGs remain disputed, in part because numerous putative drivers simultaneously covary with latitude1,3,5. The past provides the opportunity to disentangle LDG mechanisms because the relationships among biodiversity, latitude...

Effects of moisture and density-dependent interactions on tropical tree diversity.
Nature Lebrija-Trejos E, Hernández A et. al.

Feb 16th, 2023 - Tropical tree diversity increases with rainfall1,2. Direct physiological effects of moisture availability and indirect effects mediated by biotic interactions are hypothesized to contribute to this pantropical increase in diversity with rainfall2-6. Previous studies have demonstrated direct physiological effects of variation in moisture availability on tree survival and diversity5,7-10, but the...

The meaning of the word elegance as a wine descriptor: Effect of expertise and wine type.
Food Research International (Ottawa, Ont.); Shepherd H, V Parr W et. al.

Feb 5th, 2023 - The aim of the present study was to investigate the concept of elegance in wine as a function of (i) domain-specific expertise, and (ii) wine type, more specifically as applied to still wine and to sparkling wine. One hundred and fifty participants, classified into five categories depending on their wine-relevant expertise, completed an online questionnaire aimed at inducing verbal responses co...

Mapping the Amazon's fish under threat.
Nature Noronha PM

Jan 31st, 2023 - Mapping the Amazon's fish under threat.|2023|Noronha PM,|classification,

New CT Scan Distinguishes Primary Aldosteronism Subtypes.
JAMA Harris E

Jan 26th, 2023 - New CT Scan Distinguishes Primary Aldosteronism Subtypes.|2023|Harris E,|diagnostic imaging,classification,complications,diagnostic imaging,etiology,

Organization and Performance of US Health Systems.
JAMA Beaulieu ND, Chernew ME et. al.

Jan 25th, 2023 - Health systems play a central role in the delivery of health care, but relatively little is known about these organizations and their performance. To (1) identify and describe health systems in the United States; (2) assess differences between physicians and hospitals in and outside of health systems; and (3) compare quality and cost of care delivered by physicians and hospitals in and outside ...

The next worrisome coronavirus variant could come from China - will it get detected?
Nature Lewis D

Jan 25th, 2023 - The next worrisome coronavirus variant could come from China - will it get detected?|2023|Lewis D,|epidemiology,epidemiology,virology,classification,genetics,isolation & purification,

Minimal Antigenic Evolution after a Decade of Norovirus GII.4 Sydney_2012 Circulation i...
Journal of Virology; Parra GI, Tohma K et. al.

Jan 24th, 2023 - Norovirus is a major human pathogen that can cause severe gastroenteritis in vulnerable populations. The extensive viral diversity presented by human noroviruses constitutes a major roadblock for the development of effective vaccines. In addition to the large number of genotypes, antigenically distinct variants of GII.4 noroviruses have chronologically emerged over the last 3 decades. The last ...

A SARS-CoV-2-Related Virus from Malayan Pangolin Causes Lung Infection without Severe D...
Journal of Virology; Liu MQ, Lin HF et. al.

Jan 24th, 2023 - Coronavirus disease 2019 (COVID-19), which is caused by the novel coronavirus severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), is the most severe emerging infectious disease in the current century. The discovery of SARS-CoV-2-related coronaviruses (SARSr-CoV-2) in bats and pangolins in South Asian countries indicates that SARS-CoV-2 likely originated from wildlife. To date, two SAR...

Patients With Mild COVID-19 at Risk of Some Post-COVID-19 Condition Symptoms.
JAMA Larkin HD

Jan 19th, 2023 - Patients With Mild COVID-19 at Risk of Some Post-COVID-19 Condition Symptoms.|2023|Larkin HD,|classification,complications,diagnosis,diagnosis,etiology,

The person-to-person transmission landscape of the gut and oral microbiomes.
Nature Valles-Colomer M, Blanco-Míguez A et. al.

Jan 19th, 2023 - The human microbiome is an integral component of the human body and a co-determinant of several health conditions1,2. However, the extent to which interpersonal relations shape the individual genetic makeup of the microbiome and its transmission within and across populations remains largely unknown3,4. Here, capitalizing on more than 9,700 human metagenomes and computational strain-level profil...

How your first brush with COVID warps your immunity.
Nature Brazil R

Jan 19th, 2023 - How your first brush with COVID warps your immunity.|2023|Brazil R,|immunology,virology,classification,immunology,pathogenicity,

Identification of Cartilaginous Fish Endogenous Foamy Virus Rooting to Vertebrate Count...
Journal of Virology; Wang X, Chen Y et. al.

Jan 19th, 2023 - Foamy viruses (FVs) are ideal models for studying the long-term evolutionary history between viruses and their hosts. Currently, FVs have been documented in nearly all major taxa of vertebrates, but evidence is lacking for true FV infiltration in cartilaginous fish, the most basal living vertebrates with jaws. Here, we screened 11 available genomes and 10 transcriptome sequence assemblies of ca...

Development of inferiority-compensation scale among high school students.
BMC Medical Education; Yang D, Qiu B et. al.

Jan 13th, 2023 - An increasing number of high school students are inflicted by different degrees of mental disorders in learning, such as moodiness, learning difficulties, test anxiety, difficulty coping with frustration, etc., which are one of the factors leading to the inferiority of students. In the present study, the initial scale of inferiority compensation for high school students was developed through li...

Confusion and prospects for carcinogenesis of gastric adenoma and dysplasia: What is th...
World Journal of Gastroenterology; Kinami S, Yamada S et. al.

Jan 13th, 2023 - There are differences in the diagnoses of superficial gastric lesions between Japan and other countries. In Japan, superficial gastric lesions are classified as adenoma or cancer. Conversely, outside Japan, the same lesion is classified as low-grade dysplasia (LGD), high-grade dysplasia, or invasive neoplasia. Gastric carcinogenesis occurs mostly de novo, and the adenoma-carcinoma sequence does...

Coronavirus variant XBB.1.5 rises in the United States - is it a global threat?
Nature Callaway E

Jan 10th, 2023 - Coronavirus variant XBB.1.5 rises in the United States - is it a global threat?|2023|Callaway E,|epidemiology,virology,classification,epidemiology,

A Long-Running Arms Race between APOBEC1 Genes and Retroviruses in Tetrapods.
Journal of Virology; Wang W, Han GZ

Jan 5th, 2023 - Activation-induced cytidine deaminase/apolipoprotein B mRNA editing catalytic polypeptide-like (AID/APOBEC) proteins are cytosine deaminases implicated in diverse biological functions. APOBEC1 (A1) proteins have long been thought to regulate lipid metabolism, whereas the evolutionary significance of A1 proteins in antiviral defense remains largely obscure. Endogenous retroviruses (ERVs) documen...