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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.
Multiple experimental evidences have confirmed that at the molecular level, cancer is caused by lesions in cellular DNA.
All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.
![As a result of sharing its environment with humans, this macaque had the opportunity to steal an ast](https://biology-forums.com/gallery/47/medium_12359_08_06_12_5_24_39.jpeg)
![Nebulizer. The nebulizer converts a liquid medication to a mist that is easily inhaled. A face mask,](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_25_46_100642210.jpeg)