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Drug-induced pharmacodynamic effects manifested in older adults include drug-induced renal toxicity, which can be a major factor when these adults are experiencing other kidney problems.

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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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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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There used to be a metric calendar, as well as metric clocks. The metric calendar, or "French Republican Calendar" divided the year into 12 months, but each month was divided into three 10-day weeks. Each day had 10 decimal hours. Each hour had 100 decimal minutes. Due to lack of popularity, the metric clocks and calendars were ended in 1795, three years after they had been first marketed.

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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.

Hand muscle Hand muscle
Muscle contracture. Muscle contracture.
Frog muscle - depressor mandibulae, latissimus dorsi (labeled) Frog muscle - depressor mandibulae, latissimus dorsi (labeled)
The relation between a raw EMG signal and its integrated version. The volunteer tensed her muscle ... The relation between a raw EMG signal and its integrated version. The volunteer tensed her muscle ...
Structure of a myofiber (muscle cell) Structure of a myofiber (muscle cell)
Structure of a skeletal muscle. Structure of a skeletal muscle.
Video: DNA Replication

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