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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.
In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
![Sliding effleurage with a thumb between metatarsals on the dorsal foot surface. Slide from web to ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_5_49_57_33263851.jpeg)
![Use full palms to apply light sliding strokes from foot to hip. This connects and finishes massage ...](https://biology-forums.com/gallery/33/medium_380798_23_08_17_7_05_49_333131346.jpeg)