Results 151 to 160 of about 134,839 (260)

Ultrastructure of the Developing Sunflower Microscope

open access: yes, 1977
An investigation of the ultrastructure revealed that most of the mitochondria of the microspore and mononuclear pollen grain of the sunflower are situated on the surface of the outer membrane of the nuclear envelope, frequently in direct contact with ...
Simonenko, V. K.
core  

Acinar‐Derived Organoids Reveal Stage‐Specific Control of Acinar Plasticity

open access: yesAdvanced Science, EarlyView.
An acinar‐derived organoid system maintains adult pancreatic acinar identity ex vivo, converts it along an ordered acinar‐to‐ductal‐like trajectory, and then partially restores it. Each transition carries its own signal requirement, with EGF/EGFR initiating conversion and a staged glucocorticoid–IGF1R switch driving redifferentiation.
Yongfei Hou   +10 more
wiley   +1 more source

Long‐Term Expandable Periosteal Organoids Reconstruct a Functional Regenerative Niche That Support Hematopoietic Stem Cell Maintenance and Bone Repair

open access: yesAdvanced Science, EarlyView.
A robust periosteal organoid system enables long‐term expansion while preserving native cellular heterogeneity. These organoids recapitulate functional niche environments, support hematopoietic stem cell maintenance, and attenuate aging‐associated decline ex vivo.
Jia Qing   +9 more
wiley   +1 more source

Ultrastructure of cells of the dermal papilla in pennaceopus feathers

open access: yes, 2011
The ultrastructure of the dermal papilla of feathers shows it is made by small cells while the pulp is formed by a loose ...
ALIBARDI, LORENZO
core  

Donor‐Cell Senescence Redirects PINK1‐Marked Mitochondrial Cargo From Mitophagy to Microvesicle Transfer Through SUMO3‐Stabilized HSPA9

open access: yesAdvanced Science, EarlyView.
ABSTRACT Extracellular vesicle therapies have been developed for tissue repair, but how donor‐cell senescence reshapes vesicle‐mediated mitochondrial transfer remains unclear. Here, we show that senescent adipose‐derived stem cells (ADSCs) redirect damaged mitochondria into microvesicles (MVs), converting protective vesicles into pro‐degenerative ...
Zixuan Ou   +21 more
wiley   +1 more source

Correction to: Combining ultrastructure expansion microscopy with immunofluorescence and Oligopaint DNA FISH. [PDF]

open access: yesChromosome Res
Raab LM   +6 more
europepmc   +1 more source

Engineering a Bioelectronic Hybrid Heart with Integrated Sensing and Electrical Modulation

open access: yesAdvanced Science, EarlyView.
A bioelectronic hybrid heart is engineered by integrating iPSC‐derived cardiomyocytes, a decellularized cardiac scaffold, a cell‐laden ECM coating, and a flexible electronic mesh. The embedded electrodes enable real‐time recording of spontaneous electrical activity and localized stimulation, allowing controlled pacing and modulation of activation ...
Itai Cabilly   +7 more
wiley   +1 more source

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