AAV	Adeno-associated virus
BMP4	Bone morphogenic protein 4
CNS	Central nervous system
ER	Endoplasmic reticulum
ERT	Enzyme replacement therapy
FGF	Fibroblast growth factor
GAG	Glycosaminoglycan
GlcA	Glucuronic acid
GlcNAc	N-acetylglucosamine
GPC	Glial restricted progenitor cell
HS	Heparan sulfate
HSPG	Heparan sulfate proteoglycan
IdoA	Iduronic acid
iPSC	Induced pluripotent stem cell
LSD	Lysosomal storage disorder
MPS	Mucopolysaccharidosis
NSC	Neural stem cell
RNAi	Ribonucleic acid interference
shRNA	Short hairpin ribonucleic acid
siRNA	Small interference ribonucleic acid
SRT	Substrate reduction therapy