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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.

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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

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Although the Roman numeral for the number 4 has always been taught to have been "IV," according to historians, the ancient Romans probably used "IIII" most of the time. This is partially backed up by the fact that early grandfather clocks displayed IIII for the number 4 instead of IV. Early clockmakers apparently thought that the IIII balanced out the VIII (used for the number 8) on the clock face and that it just looked better.

Ovulation Process The two ovaries alternate ovulation in each monthly cycle. Ovulation Process The two ovaries alternate ovulation in each monthly cycle.
Data from more than 22,000 men over the age of 40, showing the relationship between birth weight and ... Data from more than 22,000 men over the age of 40, showing the relationship between birth weight and ...
The process of phagocytosis: a phagocyte engulfing bacteria or other foreign material. The process of phagocytosis: a phagocyte engulfing bacteria or other foreign material.
Before starting the process of adjusting the valves, look up the specifications and exact ... Before starting the process of adjusting the valves, look up the specifications and exact ...
The gastrointestinal tract and the process of digestion. The gastrointestinal tract and the process of digestion.
Incineration Process Incineration Process
Video: Structures that affect circulation - arterioles and vasomotor responses

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