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Did you know?

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.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

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Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

The major types of plant nutrients and their sources. The major types of plant nutrients and their sources.
Local and long–distance cell communication in animals. Local and long–distance cell communication in animals.
Natural plant sources of pharmaceutical Natural plant sources of pharmaceutical
Deforestation is one of the main sources of greenhouse gas emissions Deforestation is one of the main sources of greenhouse gas emissions
Food Sources Milk and yogurt Food Sources Milk and yogurt
Some drugs are still derived from natural sources Some drugs are still derived from natural sources
Video: Calvin cycle (The light-independent reactions )

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