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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.

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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

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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.

Signal amplification Signal amplification
Recombinants are meiotic output different from meiotic input Recombinants are meiotic output different from meiotic input
An electrocardiogram (EKG) wave, a record of the electrical signal as it moves through the conductio An electrocardiogram (EKG) wave, a record of the electrical signal as it moves through the conductio
A spark tester connected to a spark plug wire or coil output. A typical spark tester will fire only ... A spark tester connected to a spark plug wire or coil output. A typical spark tester will fire only ...
Eukaryotic signal transduction systems involving membrane receptors (1–5)/ second messengers (1-4) Eukaryotic signal transduction systems involving membrane receptors (1–5)/ second messengers (1-4)
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Video: Role of ATP in muscle movement

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