Table 1. Growth inhibition of E. coli strain BAS3023 by lichen Hypotrachyna sp. HP20ss fractions.
| Fraction | IC50 Growth inhibition (µg/mL) |
| Total extract | 12.5 |
| Fraction 1 | negative |
| Fraction 2 | negative |
| Fraction 3 | 25 |
| Fraction 4 | 5 |
| Fraction 5 | 5 |
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