• definition of Tissue

Types of Tissues

Ground tissue 基本组织，Areolar:细隙的，squamous扁平，stratify多层，tansitional渐变的

• animal tissues
• plant tissues

Key factors

• Repair/replace damaged tissues

– Enhance natural regeneration

Important Variable重要变量

• (1) Tissue-like constructs (Scaffold)组织样构建体(支架)
• (2) Chemical Factors
• (3) Ideal Extracellular Matrix
• (4) “Natural” Materials
• (5) Mechanical Forces

Models for Tissue Engineering

• In vitro differentiation

  – Construct tissues outside body before transplantation

  – Ultimate goal

  • Most economical
  • Least waiting time

• In situ methodology

  – Host remodeling of environment