![Figure 3](/ServeContent?url=http%3A%2F%2Fdbm.sagepub.com%2Fcontent%2F1%2F1%2F502318%2FF3.medium.gif)
Figure 3
Immunostaining of sections from PDL specimens treated with PBS (a), (c) or collagenase (24 units/mL) (b), (d) using an antibody against type I collagen (a), (b) or type III collagen (c), (d). Arrowheads indicate predentine. P: dental pulp.