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Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.

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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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Drug abusers experience the following scenario: The pleasure given by their drug (or drugs) of choice is so strong that it is difficult to eradicate even after years of staying away from the substances involved. Certain triggers may cause a drug abuser to relapse. Research shows that long-term drug abuse results in significant changes in brain function that persist long after an individual stops using drugs. It is most important to realize that the same is true of not just illegal substances but alcohol and tobacco as well.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.

The nitrogen cycle. Numbers represent fluxes as 1012 g N per year (data from Schlesinger 1991, after The nitrogen cycle. Numbers represent fluxes as 1012 g N per year (data from Schlesinger 1991, after
Bronchoscopy. Figure illustrates physician using a bronchoscope to inspect the patient’s bronchial t Bronchoscopy. Figure illustrates physician using a bronchoscope to inspect the patient’s bronchial t
Hand mnemonic for the basic atmosphere composition being 4/5 nitrogen and 1/5 oxygen. Hand mnemonic for the basic atmosphere composition being 4/5 nitrogen and 1/5 oxygen.
James Madison was a key figure at the Constitutional Convention of 1787 in Philadelphia. He not only James Madison was a key figure at the Constitutional Convention of 1787 in Philadelphia. He not only
The figure shows an LR circuit with a switch and a 240-volt battery. At the instant the switch ... The figure shows an LR circuit with a switch and a 240-volt battery. At the instant the switch ...
Pineapples carry harmful insect shell insects, safe to eat? Pineapples carry harmful insect shell insects, safe to eat?
Video: PET Scan Animation

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