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In chemistry and biology, reactive oxygen species ( ROS) are highly reactive chemicals formed from diatomic oxygen ( O2 ), water, and hydrogen peroxide. Some prominent ROS are hydroperoxide (O 2 H), superoxide (O 2- ), [1] hydroxyl radical (OH. ), and singlet oxygen. [2] ROS are pervasive because they are readily produced from O 2, which is ...
Early symbols similar to the Chi Rho were the Staurogram and the IX monogram (). In pre-Christian times, the Chi-Rho symbol was also used to mark a particularly valuable or relevant passage in the margin of a page, abbreviating chrēston (good). [3] Some coins of Ptolemy III Euergetes (r. 246–222 BC) were marked with a Chi-Rho. [4]
ROS1 is a receptor tyrosine kinase (encoded by the gene ROS1) with structural similarity to the anaplastic lymphoma kinase (ALK) protein; it is encoded by the c-ros oncogene and was first identified in 1986. The exact role of the ROS1 protein in normal development, as well as its normal physiologic ligand, have not been defined.
Rho is classed as a liquid consonant (together with Lambda and sometimes the nasals Mu and Nu ), which has important implications for morphology. In both Ancient and Modern Greek, it represents an alveolar trill IPA: [r], alveolar tap IPA: [ɾ], or alveolar approximant IPA: [ɹ] . In polytonic orthography, a rho at the beginning of a word is ...
Typographical symbols and punctuation marks are marks and symbols used in typography with a variety of purposes such as to help with legibility and accessibility, or to identify special cases. This list gives those most commonly encountered with Latin script. For a far more comprehensive list of symbols and signs, see List of Unicode characters.
Rose Cross. The Rose Cross (also called Rose Croix and Rosy Cross) is a symbol largely associated with the legendary Christian Rosenkreuz, a Christian Kabbalist and alchemist said to have been the founder of the Rosicrucian Order. [1] [2] The Rose Cross is a cross with a rose at its centre, which is usually red, golden or white. [3]
Two blue diagonal bands forming a St. Andrew's Cross on a white background. The national flag of the Russian Federation ( Russian: Государственный флаг Российской Федерации, Gosudarstvenny flag Rossiyskoy Federatsii) is a tricolour of three equal horizontal bands: white on the top, blue in the middle, and ...
The euro sign ( €) is the currency sign used for the euro, the official currency of the eurozone and adopted, although not required to, by Kosovo and Montenegro. The design was presented to the public by the European Commission on 12 December 1996. It consists of a stylized letter E (or epsilon ), crossed by two lines instead of one.