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neoplasm

neoplasm or tumor, tissue composed of cells that grow in an abnormal way. Normal tissue is growth-limited, i.e., cell reproduction is equal to cell death. Feedback controls limit cell division after a certain number of cells have developed, allowing for tissue repair but not expansion. Tumor ...

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Featured articles:

	acetylcholine The Columbia Encyclopedia, Sixth Edition; 4/24/2008; 122 words;
	The sea urchin embryo as a model for mammalian developmental neurotoxicity: ontogenesis of the high-affinity choline transporter and its role in cholinergic trophic activity.(Article) Environmental Health Perspectives; 11/1/2003; Qiao, Dan Nikitina, Lyudmila A. Buznikov, Gennady A. Lauder, Jean M. Seidler, Frederic J. Slotkin, Theodore A.; 5600 words;
	Acetylcholine and serotonin induce larval metamorphosis of the Japanese short-neck clam Ruditapes philippinarum. Journal of Shellfish Research; 4/1/2004; Urrutia, Paula M. Okamoto, Ken Fusetani, Nobuhiro; 5641 words;
	Nicotinic acetylcholine receptors; from molecular biology to cognition.(book)(Brief Article)(Book Review) SciTech Book News; 6/1/2006; 169 words;
	Acetylcholine Chemistry: Foundations and Applications; 1/1/2004; Powers, Jennifer L.; 435 words;
	acetylcholine A Dictionary of Food and Nutrition; 1/1/2005; DAVID A. BENDER; 37 words;
	acetylcholine A Dictionary of Zoology; 1/1/1999; MICHAEL ALLABY; 59 words;
	acetylcholine esterase A Dictionary of Zoology; 1/1/1999; MICHAEL ALLABY; 29 words;
	acetylcholine A Dictionary of Psychology; 1/1/2001; ANDREW M. COLMAN; 125 words;
	acetylcholine The Oxford Pocket Dictionary of Current English; 4/28/2006; 36 words;

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