22113
In addition , bioinformatics - based analysis of a focused microarray containing 84 ECM - related cDNA probes demonstrated that HAECs essentially expressed a histotypic ECM - related " transcriptome " on PGE scaffolds , where cells were more quiescent than cells cultured on 2 - D coverslips coated with gelatin ( a well - known " inert " substrate for conventional EC culture ) , but less so than on 2 - D PGE films .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None