hr1 , an e1a ( 0-4.5 map units ) host range mutant of type 5 adenovirus ( ad5 ) , transformed a cloned rat embryo fibroblast ( cref ) cell line at about a 5-fold higher frequency than wild-type ( wt ) ad5 when cells were cultured at 37 degrees c .
C0016030
fibroblast
C0007634
cells