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tag oocyte microbiology culture evolution

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.  
Competition and Cooperation of Cheese Rind Microbes Exposed
Ashley Yeager | Jan 1, 2019 | 4 min read
Transposon mutagenesis give scientists a rare look at the most important interactions within microbial communities.
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
Opsin mediates circadian clock
Laura Hrastar(lhrastar@the-scientist.com) | Jan 27, 2005 | 3 min read
Research shows that melanopsin acts as a bistable pigment in vertebrate ganglion
Automated Colony Pickers Evolve
Helen Dell(hdell@the-scientist.com) | Jul 3, 2005 | 6 min read
Everyone knows that the first genome sequencing projects took years of work and represent the combined product of tens of thousands of individual fragments.
For Olfaction, a Hypothesis is Felled
Peter Mombaerts | Oct 24, 2004 | 6 min read
Peter MombaertsCourtesy of Peter MombaertsRarely do scientific studies claim that something is not the case. Rarer still do negative results appear in top-tier journals. Yet two recent papers in Nature describe what olfactory sensory neurons do not do.12The olfactory system is often compared to the immune system. The key cell types in each system, the olfactory sensory neuron (OSN) and the lymphocyte, can detect a wide variety of chemicals, both natural and synthetic. Chemical recognition by the
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
Illuminating Behaviors
Douglas Steinberg | Jun 1, 2003 | 6 min read
Courtesy of Genevieve Anderson If not for Nobel laureates Thomas Hunt Morgan, Eric R. Kandel, and Sydney Brenner, the notion of a general behavioral model might seem odd. Behaviors, after all, are determined by an animal's evolutionary history and ecological niche. They are often idiosyncratic, shared in detail only by closely related species. But, thanks to Morgan's research in the early 20th century, and Kandel's and Brenner's work over the past 35 years, the fly Drosophila melanogaster, t
Articles Alert
Simon Silver | Jul 8, 1990 | 7 min read
The Scientist has asked a group of experts to comment periodically upon recent articles that they have found noteworthy. Their selections, presented herein every issue, are neither endorsements of content nor the result of systematic searching. Rather, the list represents personal choices of articles the columnists believe the scientific community as a whole may also find interesting. Reprints of any articles cited here may be ordered through The Genuine Article, 3501 Market St., Philadelphia,

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