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Did you know?

Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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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.

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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

Did you know?

Women are 50% to 75% more likely than men to experience an adverse drug reaction.

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The human olfactory system. The human olfactory system.
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circulatory system circulatory system
Normal red blood cells (round) and sickled red blood cells Normal red blood cells (round) and sickled red blood cells
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