The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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Medications that are definitely not safe to take when breastfeeding include radioactive drugs, antimetabolites, some cancer (chemotherapy) agents, bromocriptine, ergotamine, methotrexate, and cyclosporine.
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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 immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.