Results 31 to 40 of about 792,725 (355)
The lymphoid-myeloid transdifferentiation potentials of members of the C/EBP family (C/EBPα, β, δ, and ε) were compared in v-Abl-immortalized primary B cells. Conversion of B cells to macrophages was readily induced by the ectopic expression of any C/EBP,
Branko Cirovic +7 more
doaj +1 more source
EVLA Observations Constrain the Environment and Progenitor System of Type Ia Supernova 2011fe
We report unique EVLA observations of SN 2011fe representing the most sensitive radio study of a Type Ia supernova to date. Our data place direct constraints on the density of the surrounding medium at radii ~10^15-10^16 cm, implying an upper limit on ...
Alicia M. Soderberg +74 more
core +1 more source
Observational constraints on the progenitors of core-collapse supernovae : the case for missing high mass stars [PDF]
Over the last 15 years, the supernova community has endeavoured to identify progenitor stars of core-collapse supernovae in high resolution archival images of their galaxies.This review compiles results (from 1999 - 2013) in a distance limited sample and
Smartt, S. J.
core +1 more source
Long term in vitro expansion of epithelial stem cells enabled by pharmacological inhibition of PAK1-ROCK-Myosin II and TGF-β signaling [PDF]
Summary: Despite substantial self-renewal capability in vivo, epithelial stem and progenitor cells located in various tissues expand for a few passages in vitro in feeder-free condition before they succumb to growth arrest.
Challberg, Sharon S +7 more
core +2 more sources
Origin of Basophils and Mast Cells
Basophils and mast cells are major players in the progression of allergic disorders. Although both cell types originate from hematopoietic stem cells, their lineage commitment pathways and mechanisms have been unsolved issues in hematology.
Yojiro Arinobu +2 more
doaj +1 more source
Constraints on the Progenitor of SN 2010jl and Pre-Existing Hot Dust in its Surrounding Medium [PDF]
A search for the progenitor of SN~2010jl, an unusually luminous core-collapse supernova of Type~IIn, using pre-explosion {\it Hubble}/WFPC2 and {\it Spitzer}/IRAC images of the region, yielded upper limits on the UV and near-infrared (IR) fluxes from any
Andrews, Jennifer +8 more
core +2 more sources
Medullary thymic epithelial cells (mTECs) play a crucial role in suppressing the onset of autoimmunity by eliminating autoreactive T cells and promoting the development of regulatory T cells in the thymus.
Mio Hayama +18 more
doaj +1 more source
A Roadmap for Human Liver Differentiation from Pluripotent Stem Cells
Summary: How are closely related lineages, including liver, pancreas, and intestines, diversified from a common endodermal origin? Here, we apply principles learned from developmental biology to rapidly reconstitute liver progenitors from human ...
Lay Teng Ang +21 more
doaj +1 more source
Investigating the Andromeda Stream: II. Orbital Fits and Properties of the Progenitor
We construct test-particle orbits and simple N-body models that match the properties of the giant stellar stream observed to the south of M31, using the model of M31's potential derived in the companion paper by Geehan et al. (2006).
A. Babul +36 more
core +1 more source
Hematopoietic (stem) cells—The elixir of life?
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo +4 more
wiley +1 more source

