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enteritis

(Encyclopedia) enteritisenteritisĕnˌtərīˈtĭs [key], inflammation of the gastrointestinal tract. Acute enteritis is not usually serious except in infants and older people, in whom the accompanying…

antidiuretic hormone

(Encyclopedia) antidiuretic hormoneantidiuretic hormoneănˌtēdīy&oomacr;rĕtˈĭk [key], polypeptide hormone secreted by the posterior pituitary gland. Its principal action is to regulate the amount…

typhoid fever

(Encyclopedia) typhoid fever acute, generalized infection caused by Salmonella typhi. The main sources of infection are contaminated water or milk and, especially in urban communities, food handlers…

parvovirus

(Encyclopedia) parvovirusparvoviruspärˌvōvīˈrəs [key], any of several small DNA viruses that cause several diseases in animals, including humans. In humans, parvoviruses cause fifth disease, or…

ethylene

(Encyclopedia) ethyleneethyleneĕthˈəlēnˌ [key] or etheneethyleneĕthˈēn [key], H2C=CH2, a gaseous unsaturated hydrocarbon. It is the simplest alkene. Ethylene is colorless, has a faint odor, and has a…

furfural

(Encyclopedia) CE5 furfuralfurfuralfûrˈfərəl [key] or furfuraldehydefurfuralfûrˌfərălˈdəhīd [key] [Lat.,=bran], C4H3OCHO, viscous, colorless liquid that has a pleasant aromatic odor; upon exposure…

ether, in chemistry

(Encyclopedia) CE5 Ethers ether, any of a number of organic compounds whose molecules contain two hydrocarbon groups joined by single bonds to an oxygen atom. The most common of these compounds…

The Chemistry of Biology: Carbohydrates

CarbohydratesThe Chemistry of BiologyIntroductionAtomic TheoryChemical Reactions: Ionic, Covalent, and Polar Covalent BondsWaterOrganic ChemistryCarbohydratesLipidsProteinsNucleic AcidsVitamins and…

The Chemistry of Biology: Organic Chemistry

Organic Chemistry The Chemistry of Biology Introduction Atomic Theory Chemical Reactions: Ionic, Covalent, and Polar Covalent Bonds Water Organic Chemistry Carbohydrates Lipids Proteins…

diarrhea

(Encyclopedia) diarrheadiarrheadīərēˈə [key], frequent discharge of watery feces from the intestines, sometimes containing blood and mucus. It can be caused by excessive indulgence in alcohol or…