Published in Science
Exogenous oestro-progestative hormones influence endometrial IL-18 system expression involved in angiogenesis and in the uterine natural killer (uNK) cell activation pathway during the implantation process.
Published in Science
Published in Science
As one of the most geologically active bodies in the solar system, Saturn's moon Enceladus not only coats itself with water ice particles, it accounts for the unusually high albedos of the other satellites orbiting within Saturn's vast, tenuous E ring. This effect is evident in Hubble Space Telescope observations obtained at true opposition on 13 a...
Published in Animal Cognition
Domestic dogs have proved to be extremely successful in finding hidden food following a series of human social cues such as pointing (an extended hand and index finger indicating the location of the reward), or body position, among many other variants. There is controversy about the mechanisms responsible for these communicative skills in dogs. On ...
Published in Science
The origin of Saturn s narrow G ring has been unclear. We show that it contains a bright arc located 167,495.6±1.3 km from Saturn s center. This longitudinally localized material is trapped in a 7: 6 corotation eccentricity resonance with the satellite Mimas. The cameras aboard the Cassini spacecraft mainly observe small (1 to 10 micrometers) dust ...
Published in Science
Jupiter s moon Io is known to host active volcanoes. In February and March 2007, the New Horizons spacecraft obtained a global snapshot of Io s volcanism. A 350-kilometer- high volcanic plume was seen to emanate from the Tvashtar volcano (62 N, 122 W), and its motion was observed. The plume s morphology and dynamics support nonballistic models of l...
Published in Science
The origin of the Moon's nonnegligible orbital eccentricity of 0.053 has no theoretical explanation. Lunar laser ranging indicates that tides on Earth are currently increasing the Moon's eccentricity. However, ocean tides were likely much weaker during the first billion years, allowing lunar tides to damp any primordial lunar eccentricity very earl...
Published in Science
An epistasis map (E-MAP) was constructed in the fission yeast, Schizosaccharomyces pombe, by systematically measuring the phenotypes associated with pairs of mutations. This high-density, quantitative genetic interaction map focused on various aspects of chromosome function, including transcription regulation and DNA repair/replication. The E-MAP u...
Published in Science (New York, N.Y.)
The nucleobase-cation-symport-1 (NCS1) transporters are essential components of salvage pathways for nucleobases and related metabolites. Here, we report the 2.85-angstrom resolution structure of the NCS1 benzyl-hydantoin transporter, Mhp1, from Microbacterium liquefaciens. Mhp1 contains 12 transmembrane helices, 10 of which are arranged in two inv...
Published in Science
Chlorides commonly precipitate during the evaporation of surface water or groundwater and during volcanic outgassing. Spectrally distinct surface deposits consistent with chloride-bearing materials have been identified and mapped using data from the 2001 Mars Odyssey Thermal Emission Imaging System. These deposits are found throughout regions of lo...
