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Did you know?

HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

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As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

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All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Phloem wound response. Phloem wound response.
Detection of Hypovolemia by the Kidney and the Renin–Angiotensin System Detection of Hypovolemia by the Kidney and the Renin–Angiotensin System
Components of a computer system. Components of a computer system.
Paranasal sinuses are part of the upper respiratory system. From here, infections may spread via the ... Paranasal sinuses are part of the upper respiratory system. From here, infections may spread via the ...
Sagittal section of the female pelvis, showing organs of the reproductive system. Sagittal section of the female pelvis, showing organs of the reproductive system.
Anatomy of Autonomic Motor Pathways Anatomy of Autonomic Motor Pathways
Video: Frequency of stimulation and force (Recruitment of motor units and force)

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