format
The format is:
Formal class 'RGList' [package "limma"]
Can be accessed as a list, with named elements
"R" ,"G" ,"Rb" ,"Gb" ,"targets", "source" ,"genes" and "printer"source
Lauretto Grasso and Eldon Ball, Molecular Genetics and Evolution Group,
Research School of Biological Sciences, Australian National University.