Results 81 to 90 of about 18,027,522 (306)

Ocean control of the breeding regime of the sooty tern in the southwest Indian Ocean [PDF]

open access: yes, 2007
Food availability, which is often seasonal, is regarded as a key factor in the breeding success of seabirds. In oceanic tropical areas, the resources are mostly patchy and ephemeral at the surface, and the seasonality is less marked than at higher ...
Jaquemet, S.   +4 more
core   +1 more source

CEACAM1 participation in breast cancer progression

open access: yesMolecular Oncology, EarlyView.
In invasive breast cancer (BC), CEACAM1 shifts from an apical to a uniform membranous/cytoplasmic pattern, or is lost, as tumors dedifferentiate, inversely tracking the Ki‐67 proliferative index. In MCF‐7 cells, only CEACAM1‐4L suppresses proliferation, repressing cell cycle and growth factor genes.
Mykola Lyndin   +3 more
wiley   +1 more source

Effect of gradual pollen presentation on pollination efficiency and reproduction of Vaccinium corymbosum Berkeley in two habitats

open access: yesFrontiers in Ecology and Evolution
IntroductionGradual pollen presentation is a reproductive strategy for plants to improve the efficiency and accuracy of pollen export and acceptance as well as to promote outcrossing.
Ke Xin Sun   +5 more
doaj   +1 more source

CGIAR Excellence in Breeding Platform - Plan of Work and Budget 2019 [PDF]

open access: yes, 2019
The CGIAR Excellence in Breeding Platform has been established to enable change within CGIAR breeding networks toward higher rates of genetic gain and scale of impact per dollar invested.
CGIAR Excellence in Breeding Platform
core  

Extracellular vesicle lipidomics liquid biopsy reveals systemic and tumor microenvironment metabolic reprogramming in ovarian cancer

open access: yesMolecular Oncology, EarlyView.
Extracellular vesicle (EV) lipidomic profiling of plasma and ascites from patients with high‐grade serous ovarian cancer and of ovarian cancer cell lines reveals enrichment of triglycerides (TGs), diacylglycerols (DGs), phosphatidylcholine (PCs), sphingomyelins (SMs), reflecting tumor metabolic reprogramming.
Shikha Rani   +9 more
wiley   +1 more source

Wildlife substitution equivalents based on metabolisable energy for calculating stocking densities on Southern African wildlife ranches

open access: yesSouth African Journal of Animal Science
This study aims to bridge the gap between the large stock unit method and the grazer and browser unit methods for estimating the stocking densities of wild herbivore ungulates on wildlife ranches and reserves using both extensive and intensive ...
CA Shepstone   +4 more
doaj   +1 more source

Floral visitors and reproductive strategies in five melittophilous species of Bignoniaceae in Southeastern Brazil

open access: yesBrazilian Archives of Biology and Technology, 2007
In order to evaluate the pollination strategies of Bignoniaceae, the floral biology and the floral visitors in five species, three cerrado shrubs (Arrabidaea brachypoda (DC.) Bor., Jacaranda decurrens Cham., and Jacaranda oxyphylla Cham.), and two lianas
Yuriko A. N. Pinto Yanagizawa   +1 more
doaj   +1 more source

Turning the heat up on independent culling in crop breeding

open access: yes, 2022
Most grain crops are sensitive to heat stress during anthesis which causes substantial reductions in grain yield, and heat stress tolerance (HST) is therefore an important trait for selection in crop breeding programmes during the 21st century.
Li, Li, Cowling, Wallace
core  

Capital and income breeding : the role of food supply [PDF]

open access: yes, 2014
This work was funded by the Natural Environment Research Council (grant number 2003/00616). A. I. Houston and J. M. McNamara were supported by Leverhulme Trust fellowships; A. I.
Stephens, P.A.   +14 more
core   +1 more source

NAPRT loss promotes lung tumor initiation and growth through AKT signaling independently of NAD+ biosynthesis

open access: yesMolecular Oncology, EarlyView.
Loss of NAPRT promotes lung tumor initiation and growth through a noncanonical mechanism, independent of its role in NAD+ biosynthesis. Mechanistically, NAPRT depletion activates the mTORC2‐driven AKT/β‐catenin signaling axis to enhance clonogenic and invasive phenotypes. Furthermore, lung‐specific Naprt deletion significantly increases tumor burden in
Myung Joon Oh   +11 more
wiley   +1 more source

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