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Did you know?

A cataract is a clouding of the eyes' natural lens. As we age, some clouding of the lens may occur. The first sign of a cataract is usually blurry vision. Although glasses and other visual aids may at first help a person with cataracts, surgery may become inevitable. Cataract surgery is very successful in restoring vision, and it is the most frequently performed surgery in the United States.

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Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.

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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Nephroblastoma. A sectioned kidney reveals the presence of a very large tumor, which arose from feta Nephroblastoma. A sectioned kidney reveals the presence of a very large tumor, which arose from feta
Calcium channels and muscle contraction: (a) Calcium channels open as the action potential travels ... Calcium channels and muscle contraction: (a) Calcium channels open as the action potential travels ...
(a) Budding yeast cells (Candida albicans). (b) Mold from a penicillium fungus. (a) Budding yeast cells (Candida albicans). (b) Mold from a penicillium fungus.
PV cells have potential for domestic and commercial use PV cells have potential for domestic and commercial use
Red Blood Cells Red Blood Cells
Action of FMRP protein in normal and fragile-X cells Action of FMRP protein in normal and fragile-X cells
Video: Flexor reflex & Crossed extensor reflex

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