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We propose that the hydrophobic C-terminal tail of CAML forms its effector domain, thus implicating the N-terminal hydrophilic domain in a regulatory role.
 N-terminal hydrophilic domain, hydrophobic C-terminal tail, CAML
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 N-terminal hydrophilic domain, hydrophobic C-terminal tail, CAML