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Did you know?
Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.
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Excessive alcohol use costs the country approximately $235 billion every year.
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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.
![A vane phaser is used to move the camshaft using changes of oil pressure from the oil control valve.](https://biology-forums.com/gallery/29/medium_548020_30_05_17_3_43_27_296422479.png)
![A fuel system tester connected in series in the fuel system so all of the fuel used flows through ...](https://biology-forums.com/gallery/29/medium_548020_30_05_17_11_15_29_299921776.png)