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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
There are more sensory neurons in the tongue than in any other part of the body.
As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.
Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.
When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
![Multiple-dose drug administration: drug A and drug B are administered every 12 hours; drug B reaches](https://biology-forums.com/gallery/47/medium_46687_12_12_14_7_07_22_19567430.jpeg)
![Drug tolerance: A shift in the dose-response curve to the right as a result of exposure to the drug.](https://biology-forums.com/gallery/30/medium_548020_07_06_17_9_28_55_304431367.png)