Fig. 2

Percentage inhibition of bacterial cells upon treatment with 100 μg/ml extract from leaves of T. welwitschii. a K. pneumoniae, b S. pneumoniae, c S. pyogenes, d B. subtilis, e ATCC strain of S. aureus, f clinical strain of S. aureus, g ATCC strain of P. aeruginosa, and h clinical strain of P. aeruginosa. Values are for mean ± standard deviation (error bar) for n = 4. The asterisks indicate a significant difference from the control with *p < 0.05, ***p < 0.001 and ns mean no significant difference