Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Effects of an activator on chromatin compaction
Chromatin
Structural organization of chromatin in the human centromere
Chromatin fibers characteristic of the interphase nucleus
Mataphase chromosomes that are derived from chromatin during mitosis