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Table 3 The percentage of cell viability as measured by MTT assay upon treating the DENV1-infected Vero E6 cells with maximum non-toxic dose of six medicinal plants.

From: Screening of anti-dengue activity in methanolic extracts of medicinal plants

Treatments

Cell viability (%)

Control (Untreated cells)

100.00 ± 10.50*

Positive control (Cells infected with DENV-1)

44.60 ± 4.42

Andrographis paniculata

113.00 ± 4.65*

Momordica charantia

98.00 ± 8.69*

Cymbopogn citrates

32.00 ± 6.93

Ocimum sanctum

48.00 ± 7.16

Citrus limon

52.00 ± 7.54

Pelargonium citrosum

41.40 ± 2.75

  1. The data shown are mean ± S.D. '*' denotes significant difference at P < 0.05, compared to the positive control using unpaired t-test, performed by GraphPad Instat version 3.0.