999 resultados para Moore, Alan, 1953-. V de vingança


Relevância:

30.00% 30.00%

Publicador:

Resumo:

The cores described in this report were taken during the R/V Robert Conrad Cruise 05 from March until April 1963 by the Lamont Geological Observatory, Columbia University. A total of 13 cores were recovered and are available at Lamont-Doherty Earth Observatory for sampling and study.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

The cores described in this report were taken during the R/V Robert Conrad Cruise 02 from 26 until 28 January 1963 by the Lamont Geological Observatory, Columbia University. A total of 5 cores were recovered and are available at Lamont-Doherty Earth Observatory for sampling and study.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

Phagocytosis of shed photoreceptor rod outer segments (ROS) by the retinal pigment epithelium (RPE) is essential for retinal function. Here, we demonstrate that this process requires αvβ5 integrin, rather than αvβ3 integrin utilized by systemic macrophages. Although adult rat RPE expressed both αvβ3 and αvβ5 integrins, only αvβ3 was expressed at birth, when the retina is immature and phagocytosis is absent. Expression of αvβ5 was first detected in RPE at PN7 and reached adult levels at PN11, just before onset of phagocytic activity. Interestingly, αvβ5 localized in vivo to the apical plasma membrane, facing the photoreceptors, and to intracellular vesicles, whereas αvβ3 was expressed basolaterally. Using quantitative fluorimaging to assess in vitro uptake of fluorescent particles by human (ARPE-19) and rat (RPE-J) cell lines, αvβ5 function-blocking antibodies were shown to reduce phagocytosis by drastically decreasing (85%) binding of ROS but not of latex beads. In agreement with a role for αvβ5 in phagocytosis, immunofluorescence experiments demonstrated codistribution of αvβ5 integrin with internalized ROS. Control experiments showed that blocking αvβ3 function with antibodies did not inhibit ROS phagocytosis and that αvβ3 did not colocalize with phagocytosed ROS. Taken together, our results indicate that the RPE requires the integrin receptor αvβ5 specifically for the binding of ROS and that phagocytosis involves internalization of a ROS-αvβ5 complex. αvβ5 integrin does not participate in phagocytosis by other phagocytic cells and is the first of the RPE receptors involved in ROS phagocytosis that may be specific for this process.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

V(D)J rearrangement is the molecular mechanism by which an almost infinite array of specific immune receptors are generated. Defects in this process result in profound immunodeficiency as is the case in the C.B-17 SCID mouse or in RAG-1 (recombination-activating gene 1) or RAG-2 deficient mice. It has recently become clear that the V(D)J recombinase most likely consists of both lymphoid-specific factors and ubiquitously expressed components of the DNA double-strand break repair pathway. The deficit in SCID mice is in a factor that is required for both of these pathways. In this report, we show that the factor defective in the autosomal recessive severe combined immunodeficiency of Arabian foals is required for (i) V(D)J recombination, (ii) resistance to ionizing radiation, and (iii) DNA-dependent protein kinase activity.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

This layer is a georeferenced raster image of the United States Geological Survey sheep map set entitled: Los Angeles and vicinity, East [and West], California. Edition 1953. It was published in 1956. Compiled from 1:24,000 scale maps of the Azusa 1953, Mt. Wilson 1953, Pasadena 1953, Los Angeles 1953, El Monte 1953, Baldwin Park 1953, La Habra 1950, Whittier 1949, and South Gate 1952 7.5 minute quadrangles. Scale 1:24,000. This layer is image 1 of 2 total images of the two sheet source map set representing the eastern portion of the map set. The image inside the map neatline is georeferenced to the surface of the earth and fit to the California State Plane Zone V Coordinate System NAD27 (in Feet) (Fipszone 0405). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. USGS maps are typical topographic maps portraying both natural and manmade features. They show and name works of nature, such as mountains, valleys, lakes, rivers, vegetation, etc. They also identify the principal works of humans, such as roads, railroads, boundaries, transmission lines, major buildings, etc. Relief is shown with standard contour intervals of 5 and 25 feet. Please pay close attention to map collar information on projections, spheroid, sources, dates, and keys to grid numbering and other numbers which appear inside the neatline. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.

Relevância:

30.00% 30.00%

Publicador:

Resumo:

This layer is a georeferenced raster image of the United States Geological Survey sheep map set entitled: Los Angeles and vicinity, East [and West], California. Edition 1953. It was published in 1956. Compiled from 1:24,000 scale maps of the Burbank 1953, Van Nuys 1953, Canoga Park 1952, Topanga 1952, Beverly Hills 1950, Hollywood 1953, Inglewood 1952, and Venice 1950 7.5 minute quadrangles. Hydrography compiled from USC&GS Chart 5144. Scale 1:24,000. This layer is image 2 of 2 total images of the two sheet source map set representing the western portion of the map set. The image inside the map neatline is georeferenced to the surface of the earth and fit to the California State Plane Zone V Coordinate System NAD27 (in Feet) (Fipszone 0405). All map collar and inset information is also available as part of the raster image, including any inset maps, profiles, statistical tables, directories, text, illustrations, index maps, legends, or other information associated with the principal map. USGS maps are typical topographic maps portraying both natural and manmade features. They show and name works of nature, such as mountains, valleys, lakes, rivers, vegetation, etc. They also identify the principal works of humans, such as roads, railroads, boundaries, transmission lines, major buildings, etc. Relief is shown with standard contour intervals of 5 and 25 feet. Depth curves in feet. Please pay close attention to map collar information on projections, spheroid, sources, dates, and keys to grid numbering and other numbers which appear inside the neatline. This layer is part of a selection of digitally scanned and georeferenced historic maps from The Harvard Map Collection as part of the Imaging the Urban Environment project. Maps selected for this project represent major urban areas and cities of the world, at various time periods. These maps typically portray both natural and manmade features at a large scale. The selection represents a range of regions, originators, ground condition dates, scales, and purposes.