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Possible definitions for xylogen

halogen
Any of the five nonmetallic elements with similar chemical properties: fluorine, chlorine, bromine, iodine (I), and astatine (At). They occur next to the rightmost column of the periodic table as usually arranged. All are highly reactive oxidizing agents (see oxidation-reduction) with valence 1 (for fluorine, the only valence). They combine readily with most metals and nonmetals to form a variety of compounds and never occur uncombined in nature. Astatine occurs naturally in minute amounts as an intermediate decay product; it has no stable nonradioactive isotope. Halogen salts with metals (halides) are very stable; sodium chloride is the most familiar. Halogen compunds coating fluorescent lamps phosphoresce to produce light in response to electric discharges inside the lamp (see electric discharge lamp).


lysogeny
Type of life cycle that takes place in a bacteriophage after it infects certain types of bacteria. The bacteriophage's genome (entire collection of genes) enters the chromosome of the host bacterium and replicates together with it. No offspring viruses are produced; instead, the infecting virus lies dormant within the host's chromosome until the host is exposed to certain stimuli, such as ultraviolet light. At that point, the virus genome is removed from the host chromosome and begins to multiply, forming new viruses. Finally, the bacterial host is destroyed (lysed), releasing virus particles into the environment to infect new bacterial cells.


zymogen
Any of a class of proteins that are secreted by cells and are inactive precursors of enzymes. Transformation into active enzymes occurs as one or more peptide bonds in the zymogen are cleaved. Examples include trypsinogen and chymotrypsinogen, secreted by the pancreas and converted by proteolysis in the small intestine into the active enzymes trypsin and chymotrypsin; and numerous coagulation factors.® ///
Irish poet and mystic. A leading figure in the Irish Literary Renaissance, he published many books of verse, incl. Homeward (1894). Though initially considered by many to be the equal of W. B. Yeats, he did not develop as a poet, and many critics found him facile, vague, and monotonous. His pseudonym arose from a proofreader's query about an earlier pseudonym, Æ on.

Top words beginning with X: xylocopid, xeruses, xerography, xanthogen, xylulokinase, xenia, xanthocephalum, xenagogy, xanthoxenite, xanthelasmoidea, xenosaurus, xanthocobaltic, xylans, xiphoidian, xxyy, xylenes, xyloplastic, xiphister, xenisma, xanthomata

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