GNB	Gram-negative bacteria
PMB	Polymyxin B
SA	Sanguinarine
ICU	Intensive care unit
WHO	World Health Organization
OM	Outer membrane
LPS	Lipopolysaccharides
MDR	Multidrug-resistant
RSDs	Relative standard deviations
PCA	Principal component analysis
FAs	Fatty acids
GLPs	Glycerophospholipids
MRSA	Methicillin-resistant staphylococcus aureus
ELISA	Enzyme-linked immunosorbent assay
E. coli	Escherichia coli
K. pneumoniae	Klebsiella Pneumoniae
P. aeruginosa	Pseudomonas aeruginosa
A. baumannii	Acinetobacter baumannii
MIC	Minimal inhibitory concentration
CLSI	Clinical and Laboratory Standards Institute
FICI	Fractional inhibitory concentration index
RT-qPCR	Quantitative reverse transcriptase PCR
SEM	Scanning electron microscopy
TEM	Transmission electron microscopy
ESI	Electrospray ionization