https://www.selleckchem.com/pr....oducts/a-1155463.htm
The microspheres with faster degradation rate induced inflammatory response and the collagen regeneration maintained in shorter time. PLLA ([η] = 3.8 microsphere with a moderate molecular weight and degradation rate could strongly regenerate Type I and III collagen to maintain a long-term aesthetic medicine effect. These properties of size, morphology and degradation behavior would influence the foreign body reaction and collagen regeneration.Inadequate vascularization leading to insufficient oxygen and nutrient supply in deeper lay