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A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).
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.
![Lithotripsy. The direction of a sound pulse crushes the stones into smaller fragments that can be pa](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_21_06_96701032.jpeg)
![Model of malaria protozoa in a red blood cell. New parasites are produced and mature in the RBC, ...](https://biology-forums.com/gallery/47/medium_665046_08_03_17_8_19_04_265451059.jpeg)