Biopsy

A biopsy is a medical test involving the removal of cellss or tissuess for examination. The tissue is often examined under a microscope and can also be analyzed chemically (for example, using PCR techniques).

When only a sample of tissue is removed, the procedure is called an incisional biopsy or core biopsy. When an entire lump or suspicious area is removed, the procedure is called an excisional biopsy. When a sample of tissue or fluid is removed with a needle, the procedure is called a needle biopsy or fine-needle aspiration.

See also: pathology

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In the News

Epilepsy-induced Brain Cell Damage Prevented In The Laboratory
For some epilepsy patients, the condition's side effects can be as troubling as the seizures. One pressing concern is potential cognitive impairment from seizures, which can include memory loss, slowed reactions and reduced attention spans. Now researchers have linked such cognitive impairments to structural changes in brain cells caused by seizures. They report that the insights they gained allowed them to use a drug to block those changes in the brains of laboratory animals.

Crystallography by NMR
While developments in crystallography previously outstripped NMR to some degree in structural studies, researchers in France have now demonstrated what NMR experts have always known - that NMR is no second choice when it comes to crystal structures!

The Center for Education and Research in Retailing
This site from Indiana University features a timeline with information relating to retail sales and retailing using the Internet (from the beginning of the 20th century through 2002), publications from the center, and links to related information.

National Retail Federation: [2004 Holiday Sales Information]
Information about retail shopping activity in the United States during the 2004 winter holiday season. Includes information and statistics on topics such as shopping on the day after Thanksgiving (called "Black Friday"), and consumer surveys relating to gift cards, toys, and online shopping. Also includes a report that "contains recent and historical data on holiday trends, including sales data, holiday hiring, and shoplifting."From a "retail trade association, with membership that comprises all retail formats."

Researchers Demonstrate NEXRAD Radar Helps National Weather Service Fo
Tornado warnings have improved significantly and the number of tornado casualties has decreased by nearly half since a network of Doppler weather radars were installed nationwide by the National Oceanic and Atmospheric Administration's National Weather Service a decade ago, according to a study published in the June issue of Weather and Forecasting, a journal of the American Meteorological Society.

Coral Reef Decline - Not Just Overfishing
Scientists widely agree that coral reefs are in declining. As featured in Geology in its September 2005 issue, a team led by Richard Aronson of the Dauphin Island Sea Lab took cores of reefs in Belize that reconstructed their history over the past several thousand years and found that they were healthy and vibrant until the 1980's when they were killed by disease and high sea temperatures. This dictates a different strategy for policymakers intent on saving reef ecosystems than just focusing on overfishing.

'IPod Doctors' Operate on Gadgets
Dropped, dunked or otherwise abused, your injured iPod need not go to that great landfill in the sky. Call a miracle worker instead. By the Associated Press.

On The Track Of Tiny Larvae, A New Model Elucidates Connections In Mar
A computer model newly developed by researchers combines ocean current simulations and genetic forecasting to help scientists predict animal dispersion patterns and details of the ecology of coral reefs across the Caribbean Sea.

F as in Fat: How Obesity Policies Are Failing in America 2005
"Obesity rates continued to rise last year in every state but one, and government policies and actions to date offer little hope of countering the trend, according to a new report by Trust for America's Health [TFAH]. ... To help combat the obesity crisis ... TFAH challenges the research community to focus on five major research questions."Includes the text of the report, state-specific obesity information (except for Hawaii), and related materials.

New Battery Technology Helps Stimulate Nerves
With the help of new silicon-based compounds, scientists -- and patients -- are getting a significant new charge out of the tiny lithium batteries used in implantable devices to help treat nervous system and other disorders. The lithium battery is the workhorse in implantable devices -- stimulators used to jump start the heart and help the central nervous system make critical connections in, for example, Parkinson's and epilepsy patients.


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