Results 111 to 120 of about 1,367,138 (398)

Embryos, Clones, and Stem Cells: A Scientific Primer

open access: yesThe Scientific World Journal, 2004
This article is intended to give the nonspecialist an insight into the nuances of “clones”, cloning, and stem cells. It distinguishes embryonic and adult stem cells, their normal function in the organism, their origin, and how they are recovered to ...
Kenyon S. Tweedell
doaj   +1 more source

MGST1, a GSH transferase/peroxidase essential for development and hematopoietic stem cell differentiation. [PDF]

open access: yes, 2018
We show for the first time that, in contrast to other glutathione transferases and peroxidases, deletion of microsomal glutathione transferase 1 (MGST1) in mice is embryonic lethal.
Abe, Hiroshi   +10 more
core   +3 more sources

Towards High‐Acuity Vision Restoration: Hybrid Retinal Prosthesis Composed of a High‐Density Multielectrode Array Integrated With Glutamatergic Cells

open access: yesAdvanced Functional Materials, EarlyView.
This work introduces a novel Hybrid Retinal Implant (HRI), composed of a high‐density electrode array integrated with glutamatergic neurons to overcome key limitations of current retinal prostheses. The significant reduction of activation threshold and of electrode cross‐talk yields in an improved spatial resolution.
Nairouz Farah   +8 more
wiley   +1 more source

Development and application of haploid embryonic stem cells

open access: yesStem Cell Research & Therapy
Haploid cells are a kind of cells with only one set of chromosomes. Compared with traditional diploid cells, haploid cells have unique advantages in gene screening and drug-targeted therapy, due to their phenotype being equal to the genotype.
Hai-Song Wang, Xin-Rui Ma, Yi-Hong Guo
doaj   +1 more source

Early cell fate decisions of human embryonic stem cells and mouse epiblast stem cells are controlled by the same signalling pathways.

open access: yesPLoS ONE, 2009
Human embryonic stem cells have unique value for regenerative medicine, as they are capable of differentiating into a broad variety of cell types. Therefore, defining the signalling pathways that control early cell fate decisions of pluripotent stem ...
Ludovic Vallier   +10 more
doaj   +1 more source

Embryonic Stem Cell Research as an Ethical Issue: On the Emptiness of Symbolic Value [PDF]

open access: yes, 2001
The debate over human embryonic stem cell research-scientific and clinical prospects as well as ethical implications-became front-page news only after two teams of university researchers reported in November 1998 that they had isolated and cultured human
Quinn, Kevin P.
core   +2 more sources

Mechanisms of action of hESC-secreted proteins that enhance human and mouse myogenesis. [PDF]

open access: yes, 2014
Adult stem cells grow poorly in vitro compared to embryonic stem cells, and in vivo stem cell maintenance and proliferation by tissue niches progressively deteriorates with age.
CONBOY, Irina M   +6 more
core   +3 more sources

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

open access: yesAdvanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva   +9 more
wiley   +1 more source

High‐Spatiotemporal‐Resolution Transparent Thermoelectric Temperature Sensor Arrays Reveal Temperature‐Dependent Windows for Reversible Photothermal Neuromodulation

open access: yesAdvanced Functional Materials, EarlyView.
Thermoelectric temperature sensors are developed that directly measure heat changes during optical‐based neural stimulation with millisecond precision. The sensors reveal the temperature windows for safe reversible neural modulation: 1.4–4.5 °C enables reversible neural inhibition, while temperatures above 6.1 °C cause permanent thermal damage.
Junhee Lee   +9 more
wiley   +1 more source

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