Reference Terms
from Wikipedia, the free encyclopedia
Ulcer
An ulcer is an open sore of the skin, eyes or mucous membrane, often caused, but not exclusively, by an initial abrasion and generally maintained by an inflammation, an infection, and/or medical conditions which impede healing.
Note: The above text is excerpted from the Wikipedia article "Ulcer", which has been released under the GNU Free Documentation License.
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Health & Medicine News
January 19, 2025
Jan. 13, 2025 — A new study shows that the risk of developing dementia anytime after age 55 among Americans is 42%, more than double the risk reported by older ...
Jan. 13, 2025 — Scientists have succeeded in controlling the structure and function of biological membranes with the help of 'DNA origami'. The system they developed may facilitate the transportation of large therapeutic loads into cells. This opens up a new way ...
Jan. 9, 2025 — An international research team has discovered a new type of skeletal tissue that offers great potential for advancing regenerative medicine and tissue ...
Jan. 1, 2025 — A research team has clarified a mechanism of how retrotransposons, genetic elements that can 'jump around' chromosomes and are known drivers of evolution, preferentially insert in the ...
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Jan. 17, 2025 — Nobody wants to share a day on the water with E. coli. The bacteria is a sure sign of fecal contamination, which is washed into waterways from farm fields or sewage systems by rain. The microbes are ...
Jan. 17, 2025 — Researchers have improved our understanding of how rotavirus, the most common cause of acute gastroenteritis in children, makes people sick. The study is among the first to show that the rotavirus ...
Jan. 17, 2025 — A new study has found older-looking brains in adults with sickle cell disease, helping to explain the cognitive challenges experienced by such individuals. A brain image from a healthy individual ...
Jan. 17, 2025 — Sunburn has traditionally been attributed to UV-induced DNA damage. However, a new study reveals that RNA, another vital cellular molecule, plays a ...
Jan. 17, 2025 — Subtle changes in the brain, detectable through advanced imaging, blood and spinal fluid analysis, happen approximately twenty years before a ...
Jan. 17, 2025 — Neuroscientists have identified that the receptor IL-1R1 plays a critical role in enabling neurons to directly communicate with the immune system. The new study provides the most detailed mapping of ...
Jan. 17, 2025 — Cutting-edge fluorescent cholesterol probes now enable scientists to visualize cholesterol movement and distribution in live cells with unprecedented detail. By combining computer simulations with ...
Jan. 17, 2025 — Fetuses of pregnant people who gained excess weight in the first trimester of pregnancy show signs of excess fat distribution in the upper arm and in ...
Jan. 16, 2025 — The tissue adjacent to a tumor behaves differently than areas farther away: The tumor's cancerous cells influence their surroundings, blocking the body's immune defenses and creating a sort of haven ...
Jan. 16, 2025 — Scientists have unveiled insights into how HIV-1, the virus responsible for AIDS, skillfully hijacks cellular machinery for its own survival. By dissecting the molecular interplay between the virus ...