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Table 6 Viability of parasites treated with MEVT and AELN

From: Gas chromatography-mass spectrometry analysis, phytochemical screening and antiprotozoal effects of the methanolic Viola tricolor and acetonic Laurus nobilis extracts

Extracts

Conc.

Parasites

B. bovis

B. bigemina

B. divergens

B. caballi

T. equi

MEVT

0.25 × IC50

+

+

+

+

+

0.5 × IC50

+

+

+

+

+

1 × IC50

+

+

+

+

+

2 × IC50

+

+

+

+

+

4 × IC50

+

–

+

–

+

6 × IC50

–

–

–

–

–

AELN

0.25 × IC50

+

+

+

+

+

0.5 × IC50

+

+

+

+

+

1 × IC50

+

+

+

+

+

2 × IC50

+

+

+

–

+

4 × IC50

+

+

+

–

+

6 × IC50

–

–

–

–

–

Untreated control

+

+

+

+

+

  1. Results are calculated as the mean values from three separate trials ± SD, a positive (+) indicates parasites regrowth, and a negative (−) shows the parasites total clearance after drug pressure withdrawal using microscopy assay