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Drum cutting

Drum cutting (incisura tympanica – definition in system of anatomic terms: PNA (Anatomic nomenclature Parisian), BNA (Anatomic nomenclature Basel), JNA (Anatomic nomenclature Yenskaya); Xing: a rivinusova cutting) – deepening in an upper part of a drum furrow, adjacent to a loose part of a tympanic membrane.

 
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Many drugs initially moved ahead in the market as drugs. Heroin, for example, was initially brought to the market as children's cough medicine. And cocaine was recommended by doctors as anesthesia and as the means increasing endurance.