655
The estrogens participate in the regulation of practically all the reproductive and sexual events of the female , although the intracellular actions by which they take place are not well known and the proposed models do not adequately satisfy the questions.
 None
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:
 None