14675
Results suggest that inhabitants from Cunha Baixa have a higher risk of suffering from serious diseases such as cancer , since high DNA damages were observed in peripheral blood leukocytes and also decreased levels of NK and T cells , which play an essential role in the defense against tumor growth .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None