Table 1. Cell Adhesion Genes Expressed during Chondroprogenitor Cell Differentiation Supported by Growth on GF.

	functional classification: cell adhesion
	gene symbol	protein name	function in chondrogenesis	reference
1	Cd44	Hyaluronate receptor	cell–matrix interactions during chondrogenesis and matrix assembly	Knudson 200369
2	Ctnna1	Catenin, alpha 1	mediates functional mesenchymal cell condensation	Delise 20024
3	Ctnnb1	Catenin, beta 1	mediates functional mesenchymal cell condensation	Delise 20024
4	Itga3	Integrin alpha 3	mediates the connection between the cell and its external environment	Kim 200370
5	Itga5	Integrin alpha 5	mediates chondrocyte adhesion to cartilage	Kurtis 200371
6	Itgav	Integrin alpha V	mediates the connection between the cell and its external environment	Kurtis 200371
7	Itgb1	Integrin beta 1	maintains the chondrocyte phenotype, prevents chondrocyte apoptosis, regulates chondrocyte-specific gene expression; mediates cell–matrix interactions; involved in chondrocyte mechanoreception	Kurtis 200371 Shakibaei 200872
8	Ncam1	Neural cell adhesion molecule	present in mesenchymal cell condensations; abundance increases during cell aggregation	Tavella 199473
9	Sgce	Sarcoglycan epsilon	transmembrane protein linking cytoplasm to extracellular matrix	Rouillard 201674