Table 4.

Antimicrobial activity of U. tomentosa extracts against potential respiratory pathogens.

IC50 (μg/mL)
Sample Location	S. aureus ATCC 5923	E. faecalis V583	P. aeruginosa PSP
Leaves
Los Chiles	312	1164	1012
Palacios	516	1444	521
Sarapiquí	603	2095	475
Stems
Palacios	380	6831	n.e
Sarapiquí	396	1383	417
Bark
Palacios	490	n.e.	n.e.
Sarapiquí	133	395	152
Wood
Palacios	1688	1112	449
Sarapiquí	2774	n.e.	811