1.Methods 32 10-week-old SD rats were divided into 4 groups with 8 rats each, including normal control, expansion control, atelo-type Ⅰ collagen and rhBMP-2 collagen composite group.
2.Tn back-arc Sydney Basin was intensely affected by back-arc spreading and trench subduction of the New England island arc, and developed serious earthquake and earthquake-related soft-sediment deformation.
