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Cell Biology

Stupid Evolution Quote of the Week:  Let Darwin Take Over
August 20, 2002
Jack Szostak (Harvard Medical Center) wins this week’s prize for a comment in an Associated Press article (see PhysOrg) claiming that scientists will create life in a test tube within 10 years.  Szostak was explaining the process of creating a cell membrane to the reporter: His idea is that once the container is made, if […]
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Cell Biology

“Genomic Junk” Is Cell’s Air-Traffic Control
July 20, 2002
51; Linc-RNAs (large intervening non-coding RNAs) have been promoted from junk molecules to air traffic controllers.  A mystery about these transcripts of DNA that are not translated into proteins is being explained.     Science Daily reported on work at Beth Israel Deaconess Medical Center (BIDMC) and the Broad Institute that found these RNA molecules […]
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Cell Biology

Adult Stem Cells Lead Health Progress
July 20, 2002
51; Adult stem cells (AS) and induced pluripotent stem cells from adult tissues (iPS) continue to rack up tallies over embryonic stem cells (ESA).  Do we really need the embryonic variety?  Some continue to say yes, even though the practice of harvesting human embryos creates serious ethical questions for many. Controlling fate:  If you’d rather […]
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Amazing Facts

Harnessing Cellular Machines for Humans
July 20, 2002
The cell is loaded with molecular machines, so why reinvent the wheel?  or the whole truck?  Martin G. L. van den Heuvel and Cees Dekker wrote in Science that engineers ought to put the existing technology to work.1  The biological cell is equipped with a variety of molecular machines that perform complex mechanical tasks such […]
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Amazing Facts

White Blood Cells Walk to Infection on Tiny Legs
May 20, 2002
51; How do white blood cells know where to go when infection strikes?  The cells have tiny little feet and crawl like millipedes, against the blood stream, if necessary, following signals from the infection site.  When they arrive, more signals tell them where to slip through the cells of the blood vessel to get to […]
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Cell Biology

Cellular Machines Coming to Light
May 20, 2002
51; As imaging techniques improve, cells are yielding up their secrets.  Scientists are getting closer to watching the processes in cellular factories in real time. Dynein:  PhysOrg reported, “Biologists capture cell’s elusive ‘motor’ on videotape, solving the mystery of its deployment.”  The article began, “Their experiments can be likened to restoring never-before-seen footage to a […]
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Amazing Facts

Your Inner Postal Service
April 20, 2002
51; Zip codes – those five- or nine-digit numbers on mail – have an analogue in every one of your cells.  Like a city,1 a cell has information to ship from place to place.2  To make sure that the manufacturing instructions for protein parts arrive at the appropriate assembly site, the shipper puts a molecular […]
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Amazing Facts

Bacterial Flagellum Can Tune Its Swim Speed with Network-Controlled Brakes
March 20, 2002
51; What’s new with flagella?  These are the favorite toys of intelligent design supporters, because they are irreducibly complex molecular machines that evolutionists rarely attempt to explain by a Darwinian process.  More fodder for their position comes from a paper in Cell1 that finds that bacteria can fine-tune their swimming velocity by means of a […]
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