A systemic biological evaluation was conducted for degradable products of domestic medical degradable material of polyvinylalcohol(PAV). The results showed that LD(50) of PVA degradable products was 3.8g/kg (mouse. i.p), no hemolysis or irritation to the skin and mucous membranes of eyes, and no sensitization occured. The cell culture could promote growth and formation of cell group. Meanwhile, PVA was embedded under skin of rabbits for nine months. As time elapsed, the fibrous tissue which surrounded the e...
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