HL	Hair Loss
MPHL	Male Pattern Hair Loss
FPHL	Female Pattern Hair Loss
AA	Alopecia Areata
AGA	Androgenetic Alopecia
COVID-19	Coronavirus Disease 2019
SARS-CoV-2	Severe Acute Respiratory Syndrome Coronavirus 2
ROS	Reactive Oxygen Species
IL-1	Interleukin 1
TNF-α	Tumor Necrosis Factor α
PHL	Pattern Hair Loss
IFN-γ	Interferon γ
MCP-1	Monocyte Chemoattractant Protein 1
PRP	Platelet-Rich Plasma
HFSCs	Human Follicle Stem Cells
LLLT	Low-Level Led Therapy
VEGF	Vascular Endothelial Growth Factor
GFs	Growth Factors
US	United States
FDA	Federal Drug Administration
WHO	World Health Organization
TE	Telogen Effluvium
Fibroblast	Growth Factor-7 FGF-7
MSC	Mesenchymal Stem Cells
AD-MSCs	Adipose-Derived Mesenchymal Stem Cells
HGF	Hepatocyte growth factor
DPC	Dermal Papilla Cell
ECs	Epithelial Cells
EGF	Epidermal Growth Factor (EGF)
FGF-b	fibroblast growth factor-beta
IL-6	Interleukin-6
TGF-β	transforming growth factor-beta
IGF-1	Insulin-like growth factor-1
HF	Human Follicles
BMP	Bone Morphogenetic Protein
BMPR1a	Bone Morphogenetic Protein Receptor Type 1A
M-CSF	Macrophage Colony-Stimulating
PDGF	platelet-derived growth factor
PGE2	Prostaglandin E2
PGF2α	ProstaglandinF2α
ARs	Androgen Receptors
TMPRSS2	Transmembrane Protease Serine 2
RT-PCR	Reverse transcription-polymerase chain reaction
usCRP	ultrasensitive C-reactive protein
LDH	Lactate dehydrogenase
ESR	Erythrocyte sedimentation rate
DPCs	Dermal papilla cells