Medical research

Toxin-antitoxin function fuels antibiotic-resistance research

Toxin-antitoxin (TA) systems are now known to negatively control plasmid replication, according to Thomas Wood, Biotechnology Endowed Chair and professor of chemical engineering in the Penn State College of Engineering.

Health

New CDC director takes over beleaguered agency amid crisis

As the coronavirus swept across the globe last year, the Centers for Disease Control and Prevention sank into the shadows, undermined by some of its own mistakes and stifled by an administration bent on downplaying the nation's ...

Cardiology

How to fill the crucial need for more black cardiologists

Dontrez Johnson Jr. is a success story in the making. A first-generation college student, he earned a biology degree from Tennessee State University and is on a fellowship helping improve health in Marion, Alabama. His next ...

Health

Wood ear mushrooms linked to Salmonella outbreak

(HealthDay)—Recalled wood ear mushrooms imported by Wismettac Asian Foods Inc., of Santa Fe Springs, California, and sold to restaurants may be linked to a multistate Salmonella outbreak, the U.S. Food and Drug Administration ...

page 1 from 7

Wood

Wood is an organic material; in the strict sense it is produced as secondary xylem in the stems of trees (and other woody plants). In a living tree it conducts water and nutrients to the leaves and other growing tissues, and has a support function, enabling woody plants to reach large sizes or to stand up for themselves. However, wood may also refer to other plant materials with comparable properties, and to material engineered from wood, or wood chips or fiber.

People have used wood for millennia for many purposes, primarily as a fuel or as a construction material for making houses, tools, weapons, furniture, packaging, artworks, and paper. Wood can be dated by carbon dating and in some species by dendrochronology to make inferences about when a wooden object was created. The year-to-year variation in tree-ring widths and isotopic abundances gives clues to the prevailing climate at that time.

This text uses material from Wikipedia, licensed under CC BY-SA