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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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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

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According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.

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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.

Structure and basic function of a typical vertebrate neuron and associated glial cells. Structure and basic function of a typical vertebrate neuron and associated glial cells.
Segregation of B cells and T cells in a lymph node Segregation of B cells and T cells in a lymph node
The cells of eukaryotes (left) and prokaryotes (right) The cells of eukaryotes (left) and prokaryotes (right)
Sickle cells in a ¬capillary. Sickle cells in a ¬capillary.
Membrane potential of a cell freely permeable to sodium only. Membrane potential of a cell freely permeable to sodium only.
a) Preformed mediators released by mast cells and their actions. (b) Newly synthesized mediators ... a) Preformed mediators released by mast cells and their actions. (b) Newly synthesized mediators ...
Video: Regulation of GFR: autoregulation via myogenic mechanism Myogenic mechanism

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