Tumor

Tumor originally just meant "swelling", but the term is very often used to denote abnormal (malignant or benign) growth of tissue. Malignant tumors (cancer) invade and destroy neighboring tissues and can become metastatic. Benign tumors do not invade neighboring tissues and do not seed metastases, but may locally grow to great size.

See also : Apoptosis -- Oncogene -- Tumor suppressor gene -- Carcinoma -- Sarcoma -- Lymphoma -- Leukemia


In the News

New Targeted Therapy Finds And Eliminates Deadly Leukemia Stem Cells
New research describes a molecular tool that shows great promise as a therapeutic for human acute myeloid leukemia, a notoriously treatment-resistant blood cancer. The study describes exciting preclinical studies in which a new therapeutic approach selectively attacks human cancer cells grown in the lab and in animal models of leukemia.

New Info on Eating Disorders in Two Stanford/Packard Children's Studie
December 2006 news release discusses two studies about childhood eating disorders, one that "confirm(s) that pro-eating disorder Web sites may promote dangerous behaviors in adolescents with eating disorders"and another that "indicates that pre-teens with eating disorders tend to lose weight more quickly than adolescents with the condition and weigh comparatively less at diagnosis."Includes links to fact sheets about eating disorders. From the Lucile Packard Children's Hospital at Stanford.

Dangerous Wheat Disease Jumps Red Sea
A new form of stem rust, a virulent wheat disease, has jumped from eastern Africa and is now infecting wheat in Yemen in the Arabian Peninsula.

In Depth: Hurricane Katrina
Collection of news stories and analysis about Hurricane Katrina and its aftermath from a British perspective. Includes a timeline, animations of the path of the storm and how hurricanes happen, map of evacuee destinations, amounts of foreign aid offered to the United States, information about draining New Orleans, eyewitness accounts, photos, and more. From the British Broadcasting Corporation (BBC).

Abundant Delicious Food Could Result In 'Food Addiction', Analysis Sug
Scientists have taken a closer look at existing studies on food intake and human behavior and found an increasing proportion of food consumption appears to be driven by pleasure, not just by the need for calories. Among some people living in affluent societies, the food environment may be creating a form of appetitive drive similar to that produced by other pleasure-driven activities such as drug use and compulsive gambling.

Speaking Freely: Unlocked, Open Source Phones for Weary iPhone Hackers
Attempts to force open the iPhone to third-party development or to other carriers has been a battle. But a slew of free, open-source and hacker-friendly alternatives are in the works. We look at nine of the best.

What Are Coral Reef Services Worth? $130,000 To $1.2 Million Per Hecta
Experts have revealed jaw-dropping dollar values of the "ecosystem services" of biomes like forests and coral reefs -- including food, pollution treatment and climate regulation.

[Funny] A referee has sent himself off in an English amateur league ma
Andy Wain had to abandon the Sunday league match between Peterborough North End and a Royal Mail side in the 63rd minute after throwing down his whistle and marching up to confront North End's keeper.

How Drones Find Queens: Odorant Receptor For Queen Bee Pheromone Ident
The mating ritual of the honey bee is a mysterious affair, occurring at dizzying heights in zones identifiable only to a queen and the horde of drones that court her. Now a research team has identified an odorant receptor that allows male drones to find a queen in flight. The receptor, on the male antennae, can detect an available queen up to 60 meters away.

Tracing The Formation Of Long-term Memory
The formation of long-term memory in fruit flies can be demonstrated by the influx of calcium into cells called mushroom body neurons that occurs after special training that includes periods of rest.




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