tokens: 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 .
folded_tokens: use southern blot analysis and restriction mapping of genomic yac ( yeast artificial chromosome ) and cosmid clone , we locate the human ril gene 240-260 kb telomeric to the irf1 gene and characterize its genomic structure .