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The giant oceanic manta ray can grow up to a maximum of 9 m (30 ft) in length [6] and to a disc size of 7 m (23 ft) across with a weight of about 3,000 kg (6,600 lb), [7] [8] but the average size commonly observed is 4.5 m (15 ft). [9] It is dorsoventrally flattened and has large, triangular pectoral fins on either side of the disc. At the ...
LINE1 (an abbreviation of Long interspersed nuclear element-1, also known as L1 and LINE-1) is a family of related class I transposable elements in the DNA of many groups of eukaryotes, including animals and plants, classified with the long interspersed nuclear elements (LINEs). [1]
[5] The first radiograph. Röntgen discovered X-rays' medical use when he made a picture of his wife's hand on a photographic plate formed due to X-rays. The photograph of his wife's hand was the first ever photograph of a human body part using X-rays. When she saw the picture, she said, "I have seen my death." [5]
1.5 mSv: 6 months Chest X-ray: 0.1 mSv: 10 days Heart: Coronary CT angiography: 12 mSv: 4 years Coronary CT calcium scan: 3 mSv: 1 year Abdominal: CT of abdomen and pelvis: 10 mSv: 3 years CT of abdomen and pelvis, low dose protocol: 3 mSv [15] 1 year CT of abdomen and pelvis, with + without radiocontrast: 20 mSv: 7 years CT Colonography: 6 mSv ...
Batomorphi is a division [2] of cartilaginous fishes, commonly known as rays, this taxon is also known as the superorder Batoidea, but the 5th edition of Fishes of the World classifies it as the division Batomorphi. [3]
A ray appears diagonally, from top left to bottom middle. Medullary rays, also known as vascular rays or pith rays, are cellular structures found in some species of wood. They appear as radial planar structures, perpendicular to the growth rings, which are visible to the naked eye.
As in other electron tomography techniques, the sample is tilted to different angles relative to the electron beam (typically every 2-3 degrees from about −60° to +60°), and an image is acquired at each angle. [5] This tilt-series of images can then be computationally reconstructed into a three-dimensional view of the object of interest. [6]
The 3D structure of acetylcholinesterase was first determined in 1991 by Joel Sussman et al. using protein from the Pacific electric ray. [ 9 ] Clinically useful quantities of butyrylcholinesterase were synthesized in 2007 by PharmAthene , through the use of genetically modified goats.