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lignum vitae |
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lignum vitae (lĭg`nəm vī`tē) [Lat.,=wood of life], tropical American evergreen tree of the genus Guaiacum. The hard, dense, and extremely durable wood, obtained chiefly from G. officinale and G. sanctum, is used for ship construction, butcher blocks, and other articles requiring strength and hardness. The trees are cultivated to some extent in Florida and California for ornament. They also yield guaiacum, a gum resin resin, any of a class of amorphous solids or semisolids. Resins are found in nature and are chiefly of vegetable origin. They are typically light yellow to dark brown in color; tasteless; odorless or faintly aromatic; translucent or transparent; brittle, fracturing ..... Click the link for more information. used in certain drugs. Various other hardwoods of Australasia (e.g., the acacia and eucalyptus) are also called lignum vitae. Lignum vitae is classified in several orders in the division Magnoliophyta Magnoliophyta (măg'nōlēŏf`ətə) ..... Click the link for more information. , class Magnoliopsida, order Sapindales, family Zygophyllaceae. lignum vitae 1. either of two zygophyllaceous tropical American trees, Guaiacum officinale or G. sanctum, having blue or purple flowers 2. the heavy resinous wood of either of these trees, which is used in machine bearings, casters, etc.: formerly thought to have medicinal properties How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Several research groups have reported occult bleeding in marathon runners, using pre-and post-race stool guaiac testing with the prevalence of blood in post-race specimens ranging from 8 to 30%(7). In addition, Medicare reimbursement rates awarded immunochemical fecal occult blood tests over the current Guaiac based fecal occult blood tests are significantly higher since they have no dietary or medicinal restrictions and exhibit higher clinical sensitivity. As is the case in the general population, only 25% of Medicare beneficiaries are screened each year with traditional guaiac fecal occult blood tests (FOBTs), compared wit h much higher rates for other regular cancer screening tests such as mammography (75%) or Pap smear testing (66%). |
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