fig7
Figure 7. Immunohistochemical staining of actin (×400) in PDLLA filler mass sections at the 2nd to 20th weeks after PDLLA filler injections. A: at the 2nd week; B: at the 8th week; C: at the 12th week; D: at the 20th week. Actin filaments are inside and the cytoskeleton of myofibroblasts. Yellow arrows: myofibroblasts, with increasing number from A to D. PDLLA: poly-D,L-lactic acid
