SARS-CoV-2	Severe acute respiratory syndrome Coronavirus-2
COVID-19	Coronavirus disease
ACE2	Angiotensin-converting enzyme 2
TMPRSS2	Transmembrane serine protease 2
SL	Sphingolipids
S1P	Sphingosine 1-Phoshate
S1PR	Sphingosine 1-Phosphate specific Receptor
GTP	Guanosine Tri-Phosphate
S1P	Sphingosine 1-Phosphate
C1P	Ceramide 1-Phosphate
CNS	Central Nervous System
NPSCs	Neural Progenitor Stem Cells
Sph	Sphingosine
SphK	Sphingosine Kinase
SPP	Sphingosine-1-Phosphate Phosphatase
Spns2	Spinster (S1P transporter)
MS	Multiple Sclerosis.