ICR mice were infected intranasally with arthroconidia of Coccicioides
immitis. Mice were treated intravenously with amphotericin B deoxycho
late (Fungizone) or an amphotericin B-lipid vehicle (AmBisome). Doses
ranged from 0.05 to 1.0 mg kg(-1). Lung weight, which parallels diseas
e severity and fungal burden in this infection, was used as the index
of protection. Both Fungizone and AmBisome were significantly and equa
lly protective at 0.3 and 1.0 mg kg(-1) body weight.