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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

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Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.

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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Examples of the results of sexual selection, a type of natural selection. Examples of the results of sexual selection, a type of natural selection.
Recruitment of Muscle Fiber Type Recruitment of Muscle Fiber Type
In a gear-type oil pump, the oil flows through the pump around the outside of each gear. This is an ... In a gear-type oil pump, the oil flows through the pump around the outside of each gear. This is an ...
When checking a waste spark-type ignition system, check that the secondary wires are attached to the ... When checking a waste spark-type ignition system, check that the secondary wires are attached to the ...
Surfing the Internet for nutrition information Surfing the Internet for nutrition information
Calculation of the probabilities in a mating involving the ABO blood type Calculation of the probabilities in a mating involving the ABO blood type
Video: Carbohydrate digestion (brush border enzymes, end products) & Carb absorption (fructose, galactose)

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