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

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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

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Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Determination of the complete genome sequence of Haemophilus influenzae by Venter, Smith, and collea Determination of the complete genome sequence of Haemophilus influenzae by Venter, Smith, and collea
A signature sequence in the EF-1α/EF-Tu protein family A signature sequence in the EF-1α/EF-Tu protein family
Post–Main-Sequence Evolution Post–Main-Sequence Evolution
Sequence Series Arithmatic Progression Problem Sequence Series Arithmatic Progression Problem
Annotation of a DNA sequence containing part of the human beta-globin gene Annotation of a DNA sequence containing part of the human beta-globin gene
Rapidly decreasing sequence costs have enabled the rapid expansion Rapidly decreasing sequence costs have enabled the rapid expansion
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