Massachusetts Institute of Technology yE图 Harvard medical school Brigham and women's hospital VA Boston Healthcare System 279J/3.96J/BE.441/HST522J BIOMATERIALS-TISSUE INTERACTIONS INTRODUCTION M. Spector, Ph D and I.v. Yannas, Ph DMassachusetts In Massachusetts Institute of Technology stitute of Technology Harvard Medical School Harvard Medical School Brigham and Wo Brigham and Women’s Hospital men’s Hospital VA Boston Healthcare System VA Boston Healthcare System 2.79J/3.96J/BE.441/HST522J 2.79J/3.96J/BE.441/HST522J BIOMATERIALS BIOMATERIALS-TISSUE INTERACTIONS: TISSUE INTERACTIONS: INTRODUCTION INTRODUCTION M. Spector, Ph.D. and I.V. Yannas, Ph.D. M. Spector, Ph.D. and I.V. Yannas, Ph.D