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A 60 mg dоse оf pyridоstigmine (аn аcetylcholinesterаse inhibitor) is injected into a patient to treat her myasthenia gravis (an autoimmune disease which leads to impairment of muscle contraction). How much is the 60 mg dose in hectograms (hg)? The metric prefix hecto (h) means 10 2 and milli (m) means 10 - 3.