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tag human embryonic stem cells microbiology

A person moving the hands of a vintage clock backwards.
Synthetic Circuits Reveal the Key to Rewinding the Cellular Clock
Charlene Lancaster, PhD | Mar 12, 2024 | 4 min read
Using a circuit-based system, scientists determined the ideal transcription factor levels to promote the successful reprogramming of fibroblasts into induced pluripotent stem cells.
Stem Cell Suicide Switch
Megan Scudellari | May 3, 2012 | 3 min read
Human embryonic stem cells swiftly kill themselves in response to DNA damage.
Julie Trolle and Jef Boeke
Self Sufficient Cells?
Katherine Irving | Jun 1, 2023 | 4 min read
Animal cells cannot produce 9 of the 20 amino acids they need to function. Some researchers are looking to change that.
Novelty Activates a Long Noncoding RNA for Spatial Learning in Mice
Shelby Bradford, PhD | Feb 6, 2024 | 4 min read
Genes activated in new environments include those used during development.
Human Pluripotent Cells Pass Safety Test
Douglas Steinberg | Sep 1, 2002 | 7 min read
Image: ©2001 MacMillan Publishers Ltd.  PLURIPOTENT-CELL PIPELINE: To obtain embryonic germ cells, researchers culture primordial germ cells (PGCs) dissected from the genital ridge. If left in situ, a PGC develops into spermatozoa or ova after its imprints have been erased and reestablished. Embryonic stem cells come from the blastocyst's inner cell mass. (Reprinted with permission, Nature 414:122-8, 2001) Because the science is hard and the politics mean, progress in understanding
Stem Cells: Safe Haven For TB
Nsikan Akpan | Feb 5, 2013 | 3 min read
Tuberculosis bacteria find shelter from drugs and the body’s defenses in bone marrow stem cells.
a human neuron illuminated in bright green on a black background.
Mitochondrial Metabolism Dictates Neurons’ Growth Rate
Katherine Irving | Jan 30, 2023 | 4 min read
Altering the rate of respiration in mitochondria changes how fast neurons grow, making mouse neurons grow more like human ones and vice versa, a study finds.
Stem Cell Know-How
Aileen Constans | Sep 1, 2002 | 7 min read
Image: Courtesy of Gwenn-AEL Dnaet ©2002 National Academy of Sciences STEM CELL XENOGRAFT: Identification of human hepatocytes in livers from immune-deficient mice transplanted with human adult hematopoietic stem cells. Photomicrographs of NOD/SCID mouse liver sections from mice transplanted with purified human Lin-CD38-CD34-C1qRp+ cells isolated from umbilical cord blood, harvested 8-10 weeks post-transplant. Tissue sections were stained for HSA (hepatocyte-specific antigen) or c-met
Epithelial cells and fungal spores are marked with fluorescent dyes. Cells have an irregular shape and are shown in green and blue colors. Spores are spherical in shape and are labeled green if they are surrounded by p11 protein. A protein in mature phagosomes is labeled violet.
Fungal Spores Hijack a Host Protein to Escape Death
Mariella Bodemeier Loayza Careaga, PhD | Jun 20, 2023 | 3 min read
Uncovering the components used by Aspergillus fumigatus to avoid intracellular destruction broadens our understanding of the mold’s pathogenesis. 
Stem Cell Discoveries Stir Debate
Douglas Steinberg | Nov 12, 2000 | 9 min read
Editor's Note: This is the first of two articles on questions raised by recent stem cell discoveries. The second article, focusing on various organs and the nervous system, will appear in the Nov. 27 issue of The Scientist. Researchers first isolated embryonic stem cells (ESCs) from mouse blastocysts almost 20 years ago, and a paper announcing the discovery of human ESCs emerged in 1998. Adult-derived stem cells (ASCs) have since become the rage in certain quarters of biology, with unexpected--

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