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In 1864, the first barbiturate (barbituric acid) was synthesized.

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Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

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The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

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Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Major types of microbial cell aggregations found in phylum Cyanobacteria. Major types of microbial cell aggregations found in phylum Cyanobacteria.
Examples of deep-sea corals found in the Sable Gully, 200 km off the coast of Nova Scotia. Examples of deep-sea corals found in the Sable Gully, 200 km off the coast of Nova Scotia.
Three of the color variants found at Fossil Rim Wildlife Center in Texas Three of the color variants found at Fossil Rim Wildlife Center in Texas
The Dugong is an endangered species; the largest remaining population is found in Australian waters The Dugong is an endangered species; the largest remaining population is found in Australian waters
The Indian palm squirrel is the most common type of squirrel found in India. The Indian palm squirrel is the most common type of squirrel found in India.
) Ornithine and citrulline, which are not found in proteins ) Ornithine and citrulline, which are not found in proteins
Video: Bond in biological molecules (Ionic, Covalent and Hydrogen bonds)/ How atoms bond?

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