The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Did you know?
To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
Color-enhanced X-ray of the colon taken during a barium enema.
Steps in the humoral and cell-mediated immune response
(left) Urine sample from an unaffected person does not change color upon exposure to air. (right) Ur