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Did you know?

When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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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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A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

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Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Easter Island—an example of Carrying Capacity Overload Easter Island—an example of Carrying Capacity Overload
Operator, Repressor Operator, Repressor
Overload Principle Overload Principle
Structural model of the Cro dimer–operator complex Structural model of the Cro dimer–operator complex
Models of the lac repressor and its binding to operator sites in DNA Models of the lac repressor and its binding to operator sites in DNA
Constitutive operator (OC) mutations Constitutive operator (OC) mutations
Video: Glucagon (glycogenolysis and gluconeogenesis)

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