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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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Lower drug doses for elderly patients should be used first, with titrations of the dose as tolerated to prevent unwanted drug-related pharmacodynamic effects.

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Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Traditional animal phylogeny based on body plans. Traditional animal phylogeny based on body plans.
Environmental ethics pertains to humans and the environment Environmental ethics pertains to humans and the environment
Producer acquiring energy and nutrients from the environment Producer acquiring energy and nutrients from the environment
The gas division of Power-U-Up plans to introduce a new gas delivery system based on the ... The gas division of Power-U-Up plans to introduce a new gas delivery system based on the ...
Lessons from Chile’s Atacama Desert Lessons from Chile’s Atacama Desert
Video: SNP Polymorphysim Microarray Chip - How to Test a Person's DNA

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