bile solubility

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• bile solubility test — (for differentiation of pneumococci from other streptococci) a sample of a broth culture is incubated at pH 7.4 to 7.6 with sodium deoxycholate. A decrease in turbidity (positive test) indicates lysing of the cells. Pneumococci give a positive… …   Medical dictionary

• solubility test — see bile solubility t …   Medical dictionary

• Bile acid — Bile acids (also known as bile salts) are steroid acids found predominantly in the bile of mammals. In humans taurocholic acid, and glycocholic acid (derivatives of cholic acid) represent approximately eighty percent of all bile acids. The two… …   Wikipedia

• test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …   Medical dictionary

• Streptococcus pneumoniae — S. pneumoniae in spinal fluid. FA stain (digitally colorized). Scientific classification Domain …   Wikipedia

• brain-heart infusion medium — an agar medium containing calf brain and beef heart infusion, peptone, glucose, and phosphate buffer; sheep blood may also be added. It is used for the cultivation of bacteria, actinomycetes, and fungi. A broth medium without the agar is used for …   Medical dictionary

• poison — poisoner, n. poisonless, adj. poisonlessness, n. /poy zeuhn/, n. 1. a substance with an inherent property that tends to destroy life or impair health. 2. something harmful or pernicious, as to happiness or well being: the poison of slander. 3.… …   Universalium

• lipid — /lip id, luy pid/, n. Biochem. any of a group of organic compounds that are greasy to the touch, insoluble in water, and soluble in alcohol and ether: lipids comprise the fats and other esters with analogous properties and constitute, with… …   Universalium

• digestive system, human — Introduction  the system used in the human body for the process of digestion. The human digestive system consists primarily of the digestive tract (alimentary canal), or the series of structures and organs through which food and liquids pass… …   Universalium

• Cholesterol — IUPAC name …   Wikipedia

• protein — proteinaceous /proh tee nay sheuhs, tee i nay /, proteinic, proteinous, adj. /proh teen, tee in/, n. 1. Biochem. any of numerous, highly varied organic molecules constituting a large portion of the mass of every life form and necessary in the… …   Universalium