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Clearly , however , this well - described cytokine cross - talk mechanism is secondary to the contact - dependent activation of DCs by NK cells described here .
 Anatomy: DCs; Anatomy: NK cells
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: DCs, NK cells 
Answer:
 Anatomy: DCs; Anatomy: NK cells