1737
Using Southern blot analysis and restriction mapping of genomic YAC ( yeast artificial chromosome ) and cosmid clones , we located the human RIL gene 240 - 260 kb telomeric to the IRF1 gene and characterized its genomic structure .
 GENE: human RIL gene; GENE: IRF1 gene
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: human RIL gene; GENE: IRF1 gene