Fig. 4

Picrosirius red staining of the periodontal ligament (PDL) in male (left) and female (right) WT and Hyp animals treated with vehicle or Scl-Ab ligament. The root surfaces of the first (M1) and second molar (M2), as well as the alveolar bone (AD), are marked. Arrows point to regions of detachment between the PDL and the tooth roots. The sample sizes ranged between 4 to 7 per group and are presented in Table 2