Researchers have successfully cloned a mouse using mature olfactory neurons as the genetic donor. The scientists credit the idea for the experiments to Woody Allen whose classic comedy Sleeper depicted scientists who try to clone a dead dictator from his nose.
The images are of a newborn mouse cloned from an olfactory sensory neuron that had been marked with a genetic change so that it would be green under fluorescent light. Here you see on the right, a green cloned pup and in the upper left a normal non-green newborn mouse for comparison.
The current study aims to answer longstanding questions about the developmental potential of mature cells. In doing their experiments, the researchers were seeking to determine whether a single mature olfactory neuron, when introduced into an egg, or oocyte, depleted of its nucleus, could revert to an undifferentiated state in which it could give rise to an adult mouse possessing the full range of olfactory receptors.
Indeed, the resulting mice exhibited an array of well organized odorant receptors that were indistinguishable from those of normal mice, the researchers reported on February 15, 2004, in an article published in an advance online publication in the journal Nature. The research was performed in the laboratories of Rudolf Jaenisch at the Whitehead Institute for Biomedical Research at MIT, and Richard Axel, a Howard Hughes Medical Institute investigator at Columbia University. Co-lead authors on the paper were Kevin Eggan in Jaenischs laboratory and Kristin Baldwin in Axels laboratory.
Jim Keeley | HHMI
Bare bones: Making bones transparent
27.04.2017 | California Institute of Technology
Link Discovered between Immune System, Brain Structure and Memory
26.04.2017 | Universität Basel
More and more automobile companies are focusing on body parts made of carbon fiber reinforced plastics (CFRP). However, manufacturing and repair costs must be further reduced in order to make CFRP more economical in use. Together with the Volkswagen AG and five other partners in the project HolQueSt 3D, the Laser Zentrum Hannover e.V. (LZH) has developed laser processes for the automatic trimming, drilling and repair of three-dimensional components.
Automated manufacturing processes are the basis for ultimately establishing the series production of CFRP components. In the project HolQueSt 3D, the LZH has...
Reflecting the structure of composites found in nature and the ancient world, researchers at the University of Illinois at Urbana-Champaign have synthesized thin carbon nanotube (CNT) textiles that exhibit both high electrical conductivity and a level of toughness that is about fifty times higher than copper films, currently used in electronics.
"The structural robustness of thin metal films has significant importance for the reliable operation of smart skin and flexible electronics including...
The nearby, giant radio galaxy M87 hosts a supermassive black hole (BH) and is well-known for its bright jet dominating the spectrum over ten orders of magnitude in frequency. Due to its proximity, jet prominence, and the large black hole mass, M87 is the best laboratory for investigating the formation, acceleration, and collimation of relativistic jets. A research team led by Silke Britzen from the Max Planck Institute for Radio Astronomy in Bonn, Germany, has found strong indication for turbulent processes connecting the accretion disk and the jet of that galaxy providing insights into the longstanding problem of the origin of astrophysical jets.
Supermassive black holes form some of the most enigmatic phenomena in astrophysics. Their enormous energy output is supposed to be generated by the...
The probability to find a certain number of photons inside a laser pulse usually corresponds to a classical distribution of independent events, the so-called...
Microprocessors based on atomically thin materials hold the promise of the evolution of traditional processors as well as new applications in the field of flexible electronics. Now, a TU Wien research team led by Thomas Müller has made a breakthrough in this field as part of an ongoing research project.
Two-dimensional materials, or 2D materials for short, are extremely versatile, although – or often more precisely because – they are made up of just one or a...
20.04.2017 | Event News
18.04.2017 | Event News
03.04.2017 | Event News
27.04.2017 | Life Sciences
27.04.2017 | Physics and Astronomy
27.04.2017 | Earth Sciences