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tag microbiology stem cells culture evolution

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.
Metal shelves densely packed with preserved tissue specimens of various sizes, all suspended in glass containers.
Evolution of 1918 Flu Virus Traced from Century-Old Samples
Dan Robitzski | May 10, 2022 | 5 min read
The work reveals that the pandemic flu was likely the direct predecessor of the seasonal H1N1 flu that circulated for decades.
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.
Making Things Grow: Insect Cells, Stem Cells, and Primary Cell Lines All Pose Challenges for Cell Culturists
Laura Defrancesco | Jun 21, 1998 | 5 min read
Date: June 22, 1998 Insect Cell Culture Media, Suppliers of Primary Cell Culture Media Advantages for Protein Expression Studies Since the mid-1950s cultures of insects--cockroaches, fruit flies, and leafhoppers, to name a few--have been the object of quiet study by physiologists and cell biologists. But along came genetic engineering and suddenly insect cultures have been put in the spotlight since they provide advantages over both bacterial and mammalian systems for recombinant protein prod
Keeping Tabs on Cultured Cells
Lissa Harris(lharris@the-scientist.com) | Mar 13, 2005 | 6 min read
THE CULTURE WITHIN:Photo courtesy of Drs. C.C. Uphoff and H.G. Drexler, DSMZ-German Collection of Microorganism and Cell Cultures, Braunschweig, GermanyHeLa cell line infected with Mycoplasma hyorhinis. Scanning electron micrograph of critical point-dried cell culture grown on cover slips. Note the loop- and rod-like mycoplasmas attached to the host cell membrane. Smaller web-like structures on the cell surface represent microvilli of the cell. Original magnification 3,000×.Mycoplasmas have
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.
Monitoring Mutations with Microfluidics
Ruth Williams | Mar 15, 2018 | 3 min read
A device dubbed the “mother machine” enables real-time observation of mutagenesis in single bacterial cells.  
Illustration of viruses represented with different colors overlapping each other.
What Happens When You Catch More than One Virus?
Alejandra Manjarrez, PhD | Dec 7, 2022 | 8 min read
The “tripledemic” shines a spotlight on viral interference, in which one infection can block another.
Researchers in George Church&rsquo;s lab modified wild type ADK proteins (left) in <em >E.coli</em>, furnishing them with an nonstandard amino acid (nsAA) meant to biocontain the resulting bacterial strain.
A Pioneer of The Multiplex Frontier
Rashmi Shivni, Drug Discovery News | May 20, 2023 | 10 min read
George Church is at it again, this time using multiplex gene editing to create virus-proof cells, improve organ transplant success, and protect elephants.
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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