AM	Alveolar macrophage
Alg	Alginate
CaP	Calcium phosphate
CLSM	Confocal laser scanning microscopy
CMC	Carboxymethyl chitosan
DEG(s)	Differentially expressed gene(s)
DLs	Double layers
DMSO	Dimethyl sulfoxide
DPBS	Dulbecco’s phosphate-buffered saline
FCS	Fetal calf serum
FPF	Fine particle fraction
GO	Gene Ontology
GSD	Geometric standard deviation
HBSS	Hanks’ balanced salt solution
LbL	Layer-by-Layer
LDH	Lactate dehydrogenase
LPS	Lipopolysaccharide
MH-S	Murine alveolar macrophage cell line MH-S
MMAD	Mass median aerodynamic diameter
MTT	3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide
NGI	Next-Generation Impactor
nRPKMs	Normalized reads per kilobase million
PFA	Paraformaldehyde
PDI	Polydispersity index
PCA	Principal component analysis
PLSF	Phagolysosomal simulant fluid
Prot	Protamine
Prot-Rho	Rhodamine-labeled protamine
PCR	Polymerase chain reaction
PXRD	Powder X-ray diffraction
RNA-seq	RNA sequencing
SEM	Scanning electron microscopy
SiO2	Silicon dioxide
THF	Tetrahydrofuran