8512
Cross - linking of the PEG - HPA conjugate with a recombinantly produced Fibronectin fragment ( Type III domains 7 - 10 ) encouraged attachment and spreading of human mesenchymal stem cells ( hMSCs ) when assessed in both two - dimensional and three - dimensional formats .
 Chemical: PEG - HPA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: PEG - HPA