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Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

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Asthma cases in Americans are about 75% higher today than they were in 1980.

Insertion of membrane proteins into the ER membrane Insertion of membrane proteins into the ER membrane
An example of a homeostatically controlled variable: blood levels of glucose in a human. An example of a homeostatically controlled variable: blood levels of glucose in a human.
Glucose carrier in tubule Glucose carrier in tubule
Many different colors of fluorescent proteins are now available Many different colors of fluorescent proteins are now available
Amino Acids Commonly Found in Proteins Amino Acids Commonly Found in Proteins
Regulatory Proteins Binding to lac Operon Regulatory Sequences Regulatory Proteins Binding to lac Operon Regulatory Sequences
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