cfu	colony-forming unit
Tregs	Regulatory T Cells
GALT	Gut-associated lymphoid tissue
CTLA-4	CTLA-4 (Cytotoxic T-Lymphocyte Antigen 4)
PD-1	Programmed cell death protein-1
PD-L1	Programmed cell death-ligand 1
mAbs	Monoclonal antibodies
SFB	Segmented filamentous bacteria
PRRs	Pattern-recognition receptors
TLR4	Toll-like receptor 4
IBD	Inflammatory bowel disease
CAR T	Chimeric antigen receptors T-cell
TCR	T-cell receptor engineered T-cell
SCFA	short-chain fatty acids
FDA	food and drug administration