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We hypothesized that adherence itself might be an important trigger for a sequence of gene activation culminating in cells with increased mRNA encoding profibrotic growth factors such as platelet-derived growth factor B subunit ( PDGF[B] ) and transforming growth factor-beta ( TGF-beta ).
 protein: PDGF[B]; protein: transforming growth factor-beta; protein: platelet-derived growth factor B subunit; protein: growth factors; protein: TGF-beta; RNA: mRNA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: PDGF[B]; protein: transforming growth factor-beta; protein: platelet-derived growth factor B subunit; protein: growth factors; protein: TGF-beta; RNA: mRNA