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During normal skin function , p53 in the keratinocyte is a transducer of the skin tanning signal and an essential component of what is effectively a keratinocyte - melanocyte signaling cycle that regulates skin pigmentation .
 Anatomy: skin; Anatomy: keratinocyte; Anatomy: skin; Anatomy: keratinocyte; Anatomy: melanocyte; Anatomy: skin
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Anatomy: skin; Anatomy: keratinocyte; Anatomy: skin; Anatomy: keratinocyte; Anatomy: melanocyte; Anatomy: skin