^* Cabanes et al. (1992). (19)
^**Active metabolites of enrofloxacin not determined.



^* Flammer et al. (1991) (17)



^* Linnehan, et al. (1999) (20)



^* Bailey et al. (1998) (16)^** Active Metabolites of Enrofloxacin not shown



^* Spoerle (1992) (18)



^* Letcher and Papich (1994) (4)