7046
High levels of ephrinB2 over - expression increases the osteogenic differentiation of human mesenchymal stem cells and promotes enhanced cell mediated mineralisation in a polyethyleneimine - ephrinB2 gene - activated matrix .
 Chemical: polyethyleneimine
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: polyethyleneimine