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Author Question: In 1935, Congress enacted the Social Security Act that included a social insurance program for the ... (Read 132 times) |
Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
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.
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.