Asthma increase, summer, 1994.
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Air Pollution↗
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[Anatomic observation of the dorsal metacarpal arteries].
Anastomosis between the first to the fourth dorsal metacarpal arteries was observed in 43 hands of adult corpses. It was found that 86% of the first dorsal metacarpal artery arises from the radial artery, 14% is replaced by the main artery of thumb or superficial branches of the radial arteries; eighty-six percent of the second dorsal metacarpal artery originates from the dorsal carpal artery. Sixty-seven percent of the third and the fourth dorsal metacarpal arteries is formed by anastomosis of the dorsal carpal artery and its deep palmar arch. The first to the fourth dorsal metacarpal arteries have 4 to 8 cutaneous branches and proximal and distal anastomoses. It is concluded that the dorsal metacarpal arteries are characterized with multiple sources and abundant anastomoses around the metacarpophalangeal joints, which can be used with advantage in the repair of soft tissue defects of the area.
Adult↗
Static or frictional electricity and the discovery of direct current.
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Animals↗