6-OHDA	6-hydroxydopamine
Ad-MSC	adipose mesenchymal stem cell
$\alpha$-syn	alpha synuclein
BBB	blood–brain barrier
BM-MSC	bone marrow mesenchymal stem cell
ESC	embryonic stem cell
FVM	fetal ventral mesencephalic
GID	graft induced dyskinesia
HIE	hypoxic ischemic encephalopathy
IA	intra-arterial
IC	intracerebral
ICH	intracerebral hemorrhage
IN	Intranasal
iPSC	induced pluripotent stem cell
IT	intrathecal
IV	intravenous
MSC	mesenchymal stem cell
Muse	multilineage differentiating stress-enduring
NSC	neural stem cell
PD	Parkinson’s Disease
ROS	reactive oxygen species
SDF-1$\alpha$	stromal- cell derived factor 1$\alpha$
SNpc	substantia nigra pars compacta
TH	tyrosine hydroxylase
UC-MSC	umbilical cord derived mesenchymal stem cell
UPDRS	Unified Parkinson’s Disease Rating Scale