1259
Cellular activation by thrombin led to a marked shift in the proportion of protein from the 27-kDa unphosphorylated form to the 29-kDa phosphoprotein species .
 protein: 29-kDa phosphoprotein species; protein: thrombin; protein: 27-kDa unphosphorylated form
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: 29-kDa phosphoprotein species; protein: thrombin; protein: 27-kDa unphosphorylated form