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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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All patients with hyperparathyroidism will develop osteoporosis. The parathyroid glands maintain blood calcium within the normal range. All patients with this disease will continue to lose calcium from their bones every day, and there is no way to prevent the development of osteoporosis as a result.

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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

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In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

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Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.

Relationships and dates divergence of living primate group based on molecular and DNA comparisons. Relationships and dates divergence of living primate group based on molecular and DNA comparisons.
cyclic nucleotide regulated potassium channel cyclic nucleotide regulated potassium channel
Group Study Group Study
(a) Blue arrows (right side): External components of the innate immune system: human body with skin, ... (a) Blue arrows (right side): External components of the innate immune system: human body with skin, ...
Channeling in carbamoyl phosphate synthetase Channeling in carbamoyl phosphate synthetase
Ecosystems are systems of interacting biotic and abiotic components Ecosystems are systems of interacting biotic and abiotic components
Video: Double Vacuum Process (Illustration No Audio)

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