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The results define essential cis-acting elements responsible for the expression of GP Ib alpha and provide insights into molecular events coinciding with the release of normal platelets into the bloodstream .
 protein: GP; cell type: normal platelets; DNA: cis-acting elements; protein: GP Ib alpha
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: GP; cell type: normal platelets; DNA: cis-acting elements; protein: GP Ib alpha