Results 31 to 40 of about 46,886 (268)

Three-Dimensional Evaluation on Ecotypic Diversity of Traditional Chinese Medicine: A Case Study of Artemisia annua L.

open access: yesFrontiers in Plant Science, 2017
Artemisinin is the first-line drug for anti-malaria recommended by the World Health Organization (WHO). As the sole natural plant source of artemisinin, ecotypes of Artemisia annua L.
Lin Li   +5 more
doaj   +1 more source

BRL1 and BRL3 are novel brassinosteroid receptors that function in vascular differentiation in Arabidopsis [PDF]

open access: yes, 2004
Plant steroid hormones, brassinosteroids (BRs), are perceived by the plasma membrane-localized leucine-rich-repeat-receptor kinase BRI1. Based on sequence similarity, we have identified three members of the BRI1 family, named BRL1, BRL2 and BRL3.
Caño Delgado, Ana   +8 more
core   +1 more source

Differences in early developmental rate and yolk conversion efficiency in offspring of trout with alternative life histories [PDF]

open access: yes, 2016
Partial migration, in which some individuals of a population migrate while other individuals remain resident, is generally associated with ontogenetic shifts to better feeding areas or as a response to environmental instability, but its underlying ...
Abbott   +63 more
core   +1 more source

Differential Distribution and Determinants of Ammonia Oxidizing Archaea Sublineages in the Oxygen Minimum Zone off Costa Rica

open access: yesMicroorganisms, 2019
Ammonia oxidizing archaea (AOA) are microbes that are widely distributed in the ocean that convert ammonia to nitrite for energy acquisition in the presence of oxygen.
Yanhong Lu   +4 more
doaj   +1 more source

Plasticity plays a dominant role in regulating the phenological variations of sugar maple populations in Canada

open access: yesFrontiers in Ecology and Evolution, 2023
Global changes affect the growing conditions of terrestrial ecosystems, causing a mismatch between plant phenology and local climates in Northern regions.
Xiali Guo   +8 more
doaj   +1 more source

Mitochondrial phylogeography and demographic history of the Vicuña: implications for conservation [PDF]

open access: yes, 2007
The vicuña (Vicugna vicugna; Miller, 1924) is a conservation success story, having recovered from near extinction in the 1960s to current population levels estimated at 275 000.
A Prieto   +60 more
core   +1 more source

Genetic Variation and Preliminary Indications of Divergent Niche Adaptation in Cryptic Clade II of Escherichia

open access: yesMicroorganisms, 2020
The evolution, habitat, and lifestyle of the cryptic clade II of Escherichia, which were first recovered at low frequency from non-human hosts and later from external environments, were poorly understood.
Zhi Yong Shen   +3 more
doaj   +1 more source

Diel rhythmicity in amino acid uptake by Prochlorococcus [PDF]

open access: yes, 2008
The marine cyanobacterium Prochlorococcus, the most abundant phototrophic organism on Earth, numerically dominates the phytoplankton in nitrogen (N)-depleted oceanic gyres.
Burkill, Peter H.   +7 more
core   +3 more sources

Explaining microbial population genomics through phage predation [PDF]

open access: yes, 2009
The remarkable diversity of genes within the pool of prokaryotic genomes belonging to the same species or pan-genome is difficult to reconcile with the widely accepted paradigm which asserts that periodic selection within bacterial populations would ...
Alex Mira   +6 more
core   +2 more sources

NK Cell Activation by Platinum Boosts Immunotherapy in HR+/HER2− Breast Cancer

open access: yesAdvanced Science, EarlyView.
Multi‐omics and single‐cell analyses identify activated NK cells as key mediators of anti‐PD‐(L)1 response in HR+/HER2− breast cancer. Platinum chemotherapy enhances NK cell cytotoxicity through NF‐κB–associated signaling, synergizing with immunotherapy and providing a rationale for combination treatment.
Yi‐Yu Chen   +8 more
wiley   +1 more source

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