RADIUM
\ɹˈe͡ɪdi͡əm], \ɹˈeɪdiəm], \ɹ_ˈeɪ_d_iə_m]\
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Radium. A radioactive element of the alkaline earth series of metals. It has the atomic symbol Ra, atomic number 88, and atomic weight 226. Radium is the product of the disintegration of uranium and is present in pitchblende and all ores containing uranium. It is used clinically as a source of beta and gamma-rays in radiotherapy, particularly BRACHYTHERAPY.
By DataStellar Co., Ltd
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A chemical element, extracted from pitch-blende, which gives off invisible rays with extremely slow loss of power or weight.
By William Dodge Lewis, Edgar Arthur Singer
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A metallic chemical element discovered in 1898 by M. and Mme. Curie of Paris. It is found in pitchblende and is capable of maintaining itself at a higher temperature than the surrounding atmosphere and of giving forth powerful invisible radiations.
By James Champlin Fernald
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A substance contained in minute quantities in pitchblende and in other minerals, capable of emitting rays or particles (a, b, y,) due to the disintegration of the molecule, which perhaps have therapeutic properties. The metal has properties which resemble barium. Atomic weight, 225. Symbol, Ra. Used only in the form of its salts, the emanations of which are employed in the treatment of lupus, epithelioma, and other affections.
By Smith Ely Jelliffe
Word of the day
Proto Oncogene Proteins c erbB 2
- cell surface protein-tyrosine kinase that is found to be overexpressed in significant number adenocarcinomas. It has extensive homology can heterodimerize EGF EPIDERMAL GROWTH FACTOR), 3 receptor (RECEPTOR, 3) and the 4 receptor. Activation of erbB-2 receptor occurs during heterodimer formation with a ligand-bound erbB family members. EC 2.7.11.-.