ATP	adenosine triphosphate
BBB	Blood–brain barrier
BCSFB	Blood–cerebrospinal fluid barrier
BexA	capsule expression A
bp	Base pairs
CapB	capsular B antigene
CapF	capsular F antigene
CEACAM	carcinoembryonic antigen-related cell adhesion molecule
CFU	Colony forming units
CNS	Central nervous system
COPD	chronic obstructive pulmonary disease
CP	Choroid plexus
CSF	Cerebrospinal fluid
DNA	Desoxyribonucleid acid
DIF	Double immunofluorescence
EDTA	ethylenediaminetetraacetic acid
FCS	Fetal calf serum
Hap	Haemophilus adhesion and penetration protein
hel	Gene encoding for H. influenzae outer membrane protein P4
HEPES	(4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid
Hia	Haemophilus influenzae adhesin
H. influenzae	Haemophilus influenzae
HiB	Haemophilus influenzae serotype B
HIBCPP	Human choroid plexus papilloma cells
Hif	Haemophjilus influenzae fimbriae
hifA	Haemophilus influenzae fimbrial gene
HiF	Haemophilus influenzae serotype F
Hmw	High molecular weight protein
h	hours
Hsf	Haemophilus influenzae type B surface fibril
ICAM	Intercellular adhesion molecule
IF	Immunofluorescence
LKP	long, thick, hemagglutination-positive pili
LOS	Lipooligosaccharide
LPS	Lipopolysaccharide
LpsA	Lipopolysaccharide glycosyl transferase
LV	low viscosity
MOI	Multiplicity of infection
NRZMHi	National reference center for meningococci and Haemophilus influenzae
NTHI	Non-typeable Haemophilus influenzae
Omp	Outer membrane protein
ompA	Gene encoding for Haemophilus influenzae outer membrane protein P5
PCR	Polymerase chain reaction
SAS	Statistical Analysis System
SEM	Scanning electron microscopy
T4SS	Bacterial type IV secretion system
TE	Buffer containing Tris-HCl and EDTA
TEER	Transepithelial electrical resistance
TEM	Transmission electron microscopy
TLR	Toll like receptor