Table 3
International time lagged high ranked 30 keywords in AS and MS

rank '03-'05 '06-'08 '09-'12
1 Mesenchymal Stem Cells Mesenchymal Stem Cells Mesenchymal Stem Cells
2 Cell Differentiation Cell Differentiation Cell Differentiation
3 Bone Marrow Cells Bone Marrow Cells Cell Proliferation
4 Tissue Engineering Cell Proliferation Bone Marrow Cells
5 Cell Proliferation Adult Stem Cells Adult Stem Cells
6 MS Transplantation MS Transplantation MS Transplantation
7 Osteoblasts Tissue Engineering iPS
8 Cell Lineage Osteoblasts Tissue Engineering
9 Adipocytes Cell Lineage Embryonic Stem Cells
10 Gene Expression Stem Cell Transplantation Biological Markers
11 Hematopoietic Stem Cells Embryonic Stem Cells Cell Lineage
12 Stem Cells Adipocytes Osteoblasts
13 Chondrogenesis Gene Expression Regulation Stem Cell Transplantation
14 Multipotent Stem Cells Regeneration Gene Expression Regulation
15 Regeneration Biological Markers Adipose Tissue
16 Biological Markers Stem Cells Regeneration
17 Stem Cell Transplantation Multipotent Stem Cells Adipocytes
18 Adipose Tissue Neurons Stem Cells
19 Gene Therapy Adipose Tissue Regenerative Medicine
20 Bone Regeneration Gene Expression Chondrogenesis
21 Transcription Factors Chondrogenesis Neurons
22 Neurons Models, Biological Multipotent Stem Cells
23 Adenoviridae Hematopoietic Stem Cells Gene Expression
24 Gene Expression Regulation Adipogenesis Adipogenesis
25 Gene Transfer Techniques Transcription Factors Pluripotent Stem Cells
26 Transplantation, Heterologous Gene Therapy Models, Biological
27 Hematopoietic SC Transplantation Pluripotent Stem Cells Hematopoietic Stem Cells
28 Models, Biological Regenerative Medicine Transcription Factors
29 Pluripotent Stem Cells Transplantation, Heterologous Nuclear Reprogramming
30 Transplantation, Homologous Bone Regeneration Umbilical Cord