9383
In the second experiment , a stable nickel isotope , 61Ni , was given in drinking water to 20 nickel - sensitized women and 20 age - matched controls , both groups having vesicular hand eczema of the pompholyx type .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities:  
Answer:
 None