Plant Extract Test Concentration Number of mice which developed infection Infection interval in days (Mean ± SEM)
V. sinaiticum Methanol 4 mg/ml 2/5 16.00+0.00
    2 mg/ml 4/5 14.50+0.50
    1 mg/ml 5/5 13.60+0.40
    0.4 mg/ml 5/5 13.20+0.48
    0.2 mg/ml 5/5 12.80+0.48
  Aqueous 4 mg/ml 5/5 13.20+0.48
    2 mg/ml 5/5 12.80+0.48
    1 mg/ml 5/5 12.40+0.40
    0.4 mg/ml 5/5 12.40+0.40
    0.2 mg/ml 5/5 12.00+0.00
Positive control Diminazineaceturate 4 mg/ml 0/5 Ni
    2 mg/ml 3/5 18.66+0.66
    1 mg/ml 4/5 16.50+0.50
    0.4 mg/ml 5/5 15.60+0.40
    0.2 mg/ml 5/5 14.80+0.48
Negative control 2% Tween 80 in PBSG   5/5 11.80+0.37
Table 4: The effect of aqueous and methanol leaf extract of Verbascum sinaiticum on blood incubation infectivity test