一、产品生命周期理论 美国经济学家雷蒙德弗农分析了产品技术变化对贸易格局的影响,提出了产品生命周 期学说,解释贸易模式的动态变动和产品领先地位变化。 1.新产品与国际贸易 新产品的出现并不总是增加世界贸易量,因为它们可能只是取代某种原有的出口产 品,如果新产品成为进口替代品,还可能使国际贸易量减少。尼龙一生丝、合成橡胶→天 然橡胶、塑料→传统材料商品。但技术创新总体上对世界贸易具有正面影响

B. Conjunctiva synthesis in vivo (regeneration) 1. Structure and function of conjunctiva. 2. Clinical effects of conjunctival scarring. 3. Anatomically well-defined defect. 4. Synthesis of conjunctival stroma, followed by re-epithelialization

TISSUES COMPRISING JOINTS Permanent Regeneration Prosthesis Scaffold Bone

TISSUES COMPRISING JOINTS Permanent Regeneration Prosthesis Scaffold

JOINT REPLACEMENT PROSTHESES Fit -Anatomy Function -Kinematics; Range of Motion Fixation Bone cement, bone interdigitation with an irregular surface, bone ingrowth into a porous coating Tribology

B. Cell-Matrix Interactions A. How cells pull onto and deform the matrix to which they attach themselves. B. Cell-matrix interactions control the spontaneous closure of wounds in organs. C. What happens when regeneration is induced?

Chapter 2. Cell-Matrix Interactions. [that determine biomaterials function in vitro and in vivo] A. How cells pull onto and deform the matrix to which they attach themselves. B. Cell-matrix interactions control the spontaneous closure of wounds in organs. C. What happens when regeneration is induced?

CELLS FOR TISSUE ENGINEERING/REGENERATIVE MEDICINE Autologous -Differentiated parenchymal cells of same or other tissue type -Stem cells (adult) Allogeneic

SACHUSE Massachusetts Institute of Technology Harvard Medical School Brigham and Women's/Massachusetts General Hosp

The Extracellular Matrices Part. 2. Elastin fibers. 3. Proteoglycans(PG) and glycosaminoglycans (GAG). 4. Cell-adhesion molecules (CAM)