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tag felisa wolfe simon culture developmental biology

Setting the Record Straight
Daniel Cossins | Oct 1, 2014 | 10+ min read
Scientists are taking to social media to challenge weak research, share replication attempts in real time, and counteract hype. Will this online discourse enrich the scientific process?
Arsenic-based life debate continues
Jessica P. Johnson | Jun 2, 2011 | 3 min read
More than a dozen researchers voice their concerns about a 2010 paper that claims bacteria can use arsenic in place of phosphorus in its DNA and other biomolecules, such as proteins.
Arsenic-based life debate continues
Jessica P. Johnson | Jun 1, 2011 | 3 min read
More than a dozen researchers voice their concerns about a 2010 paper that claims bacteria can use arsenic in place of phosphorus in its DNA and other biomolecules
How ephrins wire the brain in reverse
Simon Frantz(simonfrantz@hotmail.com) | Sep 18, 2001 | 4 min read
Ephrins guide developing axons in the brain and are capable of reverse signaling.
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
Epigenetics: Genome, Meet Your Environment
Leslie Pray | Jul 4, 2004 | 10+ min read
©Mehau Kulyk/Photo Researchers, IncToward the end of World War II, a German-imposed food embargo in western Holland – a densely populated area already suffering from scarce food supplies, ruined agricultural lands, and the onset of an unusually harsh winter – led to the death by starvation of some 30,000 people. Detailed birth records collected during that so-called Dutch Hunger Winter have provided scientists with useful data for analyzing the long-term health effects of prenat

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