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130 years ago, scientists have wondered about the origin of Merkel cells, located in the skin and specialized in the sense of touch. Now a new study led by researchers at the Free University of Brussels, has solved the mystery. The results, which are published today in the online version of the Journal of Cell Biology, show that these cells originate in the embryonic epidermis.
The skin is the barrier between an animal’s surrounding environments. It is a body able to perceive different sensations (temperature, pressure, etc.). Through specific receptors such as Merkel cells. For a long time, scientists have wondered whether these cells develop from the epidermis or the neural crest, as they show characteristics of both proteins in neuronal cells as epithelial.
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| Category: Medical Science | Tags: embryonic epidermis, environments, epidermis, epithelial, fluorescence-derived cells, Human Biology, Merkel cells, Molecular Medicine, neural crest, neuroendocrine carcinoma, tumor suppressor |
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A team of researchers at the University of Zaragoza (UNIZAR) and the Institut d’Astrophysique Spatiale (IAS, France) has developed a scintillator bolometer, a device that scientists will attempt to detect dark matter in the universe and that has been tested in the Underground Laboratory Canfranc (Huesca).
“One of the challenges of current physics is to determine the nature of dark matter, which although appears to be the fourth of the matter in the universe, can not be observed directly, so we try to detect it as the prototype we have developed “explains to SINC ABANCENS Eduardo Garcia, a researcher at the Laboratory of Nuclear Physics and Astroparticle of UNIZAR.
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| Category: Chemistry, Electronics | Tags: alpha, beta, bismuth, cosmic radiation, cryogenic detectors, dark matter, distinctive signals, gamma, germanium, hypothetical particle, ionization, Milky Way, oxygen, physics, prototype |
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Frava Research Group, University Rey Juan Carlos (Rey Juan Carlos), designs a new database for facial recognition, through 2D data, 3D or 2.5D call FRAV3D, and is available for the entire scientific community.
Creating a database for facial recognition is a complex task because many factors influence the conditions of data acquisition requires strict implementation of a protocol to ensure that all images of individuals are comparable. Evidence of this complexity is the variety of facial databases existing two-dimensional and non-existence of homogeneity among them.
In the case of three-dimensional databases, very few are currently available. The vast majority of them represent the three-dimensional information such as maps of depth (grayscale image where the intensity indicates the depth) and not as meshed (or point clouds in 3D space).
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A team of NASA scientists have discovered water molecules in the polar regions of the moon thanks to data provided by the Indian spacecraft Chandrayaan-1. The finding, published today in Science, is confirmed by the instruments of other two spacecraft.
The information provided by the instrument M3 (Moon Mineralogy Mapper) spacecraft, built at the Indian spacecraft Chandrayaan-1 has revealed the existence of water molecules in excess of what the scientists predicted. In the lunar soil has also been detected hydroxyl (OH, a molecule composed of one oxygen atom and one hydrogen atom).
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The protein SADB [1] is known to be required for the polarization of neurons in the forebrain [2], and is also suspected to be involved in the response of cells to stress [3]. But recently a team from the National Center for Biotechnology in Madrid (CNB-CSIC) has discovered that SADB is also involved in another mechanism, not the least of: genetic instability, that is to say Non-compliance of daughter cells from the mother cell.
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| Category: Genetics | Tags: asymmetric cell division, cellular structures, centrosome, centrosomes, chromosomes, forebrain, genetic, genetic instability, homeostasis, mother cell, neurons, polarization |
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