Chronic periodontitis is strongly associated with composition of the oral biofilm
occupying the gingival crevicular aspect of the tooth and its associated root. Some gram-negative,
"red complex" bacteria instigate periodontal bone loss in...
Oxygen is critical to aerobic metabolism, but hyperoxia is cytostatic and cytocidal. The precise mechanisms involved in hyperoxic cell injury remain incompletely understood although there is substantial support for the possibility that hyperoxia...
Aquatic ecosystems face major transformations as humans increasingly alter their environment by introducing exotic species and changing the temperature regime and nutrient availability of freshwater systems. The impacts of such alterations of...
At the present time there is not much known about derivatives of acridine. However, there are derivatives of acridine which are important as dyes, drugs and antiseptics. Chrysaniline, rheonine, benzoflavine, are examples of leather dyes which are...
Jackson Jail in "bloody Breathitt County." A dark building (or dark photograph), behind a telephone pole and flanked by trees. Image from Associated Press Photo, Chicago Bureau. AP caption: "Kentucky mob invades jail to seize...
Illumination of books and manuscripts, Medieval--France; Manuscripts, Medieval; Illuminations 1200-1500
Leaf from a small portable Gothic Bible, copied in France in the thirteenth century. The Latin translation used throughout this period was known as the Vulgate, since Latin was the common or vulgar language read by all literate people of the time....
The "border shows a row of stepped pyramids and a band of guilloche, and between these a wide acanthus scroll. The latter consists of foliate male masks similar to those placed in the corners and from which branches spring in either direction....
