2068
Leukocyte cultures , prepared from blood drawn from these 18 children at 6 months of age , produced lower yields of IFN than those of the remaining 53 children , when stimulated with adenovirus ( P < 0 . 001 ) , coronavirus ( P < 0 . 001 ) or rhinovirus ( P = 0 . 002 ) .
 GENE: IFN
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: IFN