|
|
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.
An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
The first war in which wide-scale use of anesthetics occurred was the Civil War, and 80% of all wounds were in the extremities.
![(a) Age of maturity of Atlantic cod decreased during the fishery collapse. (b) Evidence of maturatio](https://biology-forums.com/gallery/47/medium_33_31_08_11_2_12_19_16192083.jpeg)
![Common skin signs are often evidence of an illness or disorder. A wheal is a localized, evanescent ...](https://biology-forums.com/gallery/47/medium_665046_01_03_17_6_26_24_261321290.jpeg)
![A typical fuel-pump module assembly, which includes the pickup strainer and fuel pump, as well as ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_11_10_58_299802155.png)
![A rectangular-shaped fuel rail is used to help dampen fuel system pulsations and noise caused by ...](https://biology-forums.com/gallery/30/medium_548020_30_05_17_11_26_28_300092330.png)