1260
Using this antibody, we isolated and sequenced a human cDNA clone encoding a protein that was identical to the mammalian 27-kDa heat shock protein ( HSP27 ), a protein of uncertain function that is known to be phosphorylated to several forms and to be transcriptionally induced by estrogen .
 protein: mammalian 27-kDa heat shock protein; DNA: cDNA clone; protein: HSP27
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: mammalian 27-kDa heat shock protein; DNA: cDNA clone; protein: HSP27