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After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
The familiar sounds of your heart are made by the heart's valves as they open and close.
Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.
To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.
![Three principle forms of natural selection: (a) stabilizing selection, (b) directional selection, an](https://biology-forums.com/gallery/47/medium_33_31_08_11_2_12_19_16181010.jpeg)
![Variation in the rate of evolution as a function of the strength of selection, assuming genetic drif](https://biology-forums.com/gallery/47/medium_33_31_08_11_2_12_19_16211335.jpeg)