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

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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.

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For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

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Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.

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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Lungs Anatomy Model Lungs Anatomy Model
(a) Parathyroid hormone (PTH); (b) calcitonin action. (a) Parathyroid hormone (PTH); (b) calcitonin action.
Synaptic transmission. (a) Action potential reaches synapse; (b) neurotransmitter released synaptic ... Synaptic transmission. (a) Action potential reaches synapse; (b) neurotransmitter released synaptic ...
Mechanisms of Hormone Action Mechanisms of Hormone Action
The heart and its major blood vessels. Oxygen-rich blood is pumped from the lungs to the left The heart and its major blood vessels. Oxygen-rich blood is pumped from the lungs to the left
Main mechanism of carbon dioxide transport and exchange. A lesser amount of CO2 travels to the lungs Main mechanism of carbon dioxide transport and exchange. A lesser amount of CO2 travels to the lungs
Video: Male Reproductive System - Testosterone

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