SG	Salivary glands
IR	Irradiation
HNC	Head and neck cancer
RT	Radiotherapy
IMRT	Intensity-modulated radiotherapy
CE	Cell extract
MSC	Mesenchymal stem cells
BMSC	Bone marrow stem cells
BMSCE	Bone marrow stem cell extract
BMCE	Bone marrow cell extract
MC	Mononuclear cells
GC	Granulocytes
RBC	Red blood cell extract
MCE	Mononuclear cell extract
MI	Myocardial infarction
GCE	Granulocytes extract
RBCE	Red blood cell extract
2D	Two-dimensional
3D	Three-dimensional
AQP1	Aquaporin 1
AQP5	Aquaporin 5
PSP	Parotid secretory protein
ESCE	Embryonic stem cell extract
ESC	Embryonic stem cells
WBC	White blood cells
ADSC	Adipose stem cells
ADSCE	Adipose stem cell extract
LSC	Labial stem cells
LSCE	Labial stem cell extract
I.P	Intraperitoneally injection
I.V	Intravenous injection
I.G	Intra-glandular delivery route
ER	Endoplasmic reticulum
SDF-1	Stromal cell-derived factor 1
MMPs	Matrix metallopeptidases
CD26	Cluster of differentiation 26
OPN	Osteopontin
VEGF	Vascular endothelial growth factor
PAI-1	Plasminogen activator inhibitor-1
FGF2	Fibroblast Growth Factor 2
TIMPs	Tissue inhibitors of metalloproteinases
uPA	Urokinase plasminogen activator
TGF-beta	Transforming growth factor beta
IL-3, -6, -8, -17	Interleukin-3, -6, -8, -17
ANGs	Angiopoietin-related growth factors
BMPs	Bone morphogenetic proteins
CM	Conditioned medium
EVs	Extracellular vesicles
PRP	Platelet-rich plasma
IGF-1	Insulin-like growth factor 1
LS/MS/MS	liquid chromatography–tandem mass spectrometry
GM-CSF	Granulocyte–macrophage colony-stimulating factor
UCB	Umbilical cord blood