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Did you know?

In 1844, Charles Goodyear obtained the first patent for a rubber condom.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

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Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

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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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Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Blood types and results of donor and recipient combinations. Blood types and results of donor and recipient combinations.
If the valve clearance (lash) is not correct, loosen the retaining nut and turn the valve adjusting ... If the valve clearance (lash) is not correct, loosen the retaining nut and turn the valve adjusting ...
Stretch the hip in flexion. With one hand just above the knee and the other hand on the foot, gently ... Stretch the hip in flexion. With one hand just above the knee and the other hand on the foot, gently ...
The expected results of two generations of semiconservative replication The expected results of two generations of semiconservative replication
The results of reciprocal crosses between streptomycin-resistant and streptomycin-sensitive The results of reciprocal crosses between streptomycin-resistant and streptomycin-sensitive
Cytological proof from Zea mays that recombination results from crossing over Cytological proof from Zea mays that recombination results from crossing over
Video: Rods and Cones Animation

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