|
|
Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.
The familiar sounds of your heart are made by the heart's valves as they open and close.
Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.
Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
![An example of color blindness test. A person with red-green color blindness would not be able to dis](https://biology-forums.com/gallery/47/medium_14755_27_08_12_12_28_10_82021889.jpeg)
![Firing Rate of Individual SCN Neurons in a Tissue Culture Color bars have been added to emphasize th](https://biology-forums.com/gallery/47/medium_334766_23_04_15_12_41_35_2148555.jpeg)
![The Power and Control Wheels of Abusive Relationships When one person in a relationship repeatedly ...](https://biology-forums.com/gallery/47/medium_660365_25_12_16_12_57_52_244051343.jpeg)