Table:
Species	Tregs	CD4+ T cells that produce IL-17
Promoting factors	Inhibiting factors	Promoting factors	Inhibiting factors
Mouse	IL-2	IL-6	IL-6	TGF-β (high concentration)
TGF-β	TNF-α	TGF-β (low concentration)	IL-2
IL-10	IL-1β	IL-21	IL-4
Lower affinity of TCR	IL-23	IL-12
Saturated fatty acids	IFN-γ
IL-1β	Polyunsaturated fatty acids
Estradiol
Human	Antigen or mitogen	IL-6	IL-6	TGF-β
IL-2	IL-21	TGF-β (low concentrated)	IL-4
TGF-β	IL-23	IL-21	IL-12
IL-17	IL-23	IFN-γ
TNF-α
IL-1β
RANTES
Canine (dogs)	Con-A	IL-6	IL-6	TGF-β
IL-2	IL-1β	IL-1β
TGF-β	TFG-β
IL-10
Feline (cats)	Mitogens	IL-6	IL-1β	TGF-β
LPS and flagellin	IL-1β	IL-6	IL-10
IL-2	TGF-β
IL-21
Bovine	Antigen or mitogens along with IL-10, TGF-β	IL-6	IL-23	Progesterone, IFN-γ

Continue parse the illustration with markdown style: | <ROWSPAN=2> Species | <COLSPAN=2> Tregs | <COLSPAN=2> CD4+ T cells that produce IL-17 | 
 | Promoting factors | Inhibiting factors | Promoting factors | Inhibiting factors | 
 | --- | --- | --- | --- | --- | 
 | <ROWSPAN=7> Mouse | IL-2 | IL-6 | IL-6 | TGF-β (high concentration) | 
 | TGF-β | TNF-α | TGF-β (low concentration) | IL-2 | 
 | IL-10 | IL-1β | IL-21 | IL-4 | 
 | <ROWSPAN=4> Lower affinity of TCR | <ROWSPAN=4>  | IL-23 | IL-12

| 
 | Saturated fatty acids | IFN-γ | 
 | <ROWSPAN=2> IL-1β | Polyunsaturated fatty acids | 
 | Estradiol | 
 | <ROWSPAN=7> Human | Antigen or mitogen | IL-6 | IL-6 | TGF-β | 
 | IL-2 | IL-21 | TGF-β (low concentrated) | IL-4 | 
 | <ROWSPAN=5> TGF-β | IL-23 | IL-21 | IL-12 | 
 | IL-17 | IL-23 | IFN-γ | 
 | TNF-α | <ROWSPAN=3>  | <ROWSPAN=3>  | 
 | IL-1β | 
 | RANTES | 
 | <ROWSPAN=4> Canine (dogs) | Con-A | IL-6 | IL-6 | TGF-β | 
 | IL-2 | IL-1β | IL-1β | <ROWSPAN=3>  | 
 | TGF-β | <ROWSPAN=2>  | <ROWSPAN=2> TFG-β | 
 | IL-10 | 
 | <ROWSPAN=4> Feline (cats) | Mitogens | IL-6 | IL-1β | TGF-β | 
 | LPS and flagellin | IL-1β | IL-6 | <ROWSPAN=3> IL-10 | 
 | <ROWSPAN=2> IL-2 | <ROWSPAN=2>  | TGF-β | 
 | IL-21 | 
 | Bovine | Antigen or mitogens along with IL-10, TGF-β | IL-6 | IL-23 | Progesterone, IFN-γ |