Table 2.

Arthritis development following Tnf^ΔARE bone marrow reconstitution of lethally irradiated recipients. From Armaka, et al, J Exp Med 2008;205:331–7; with permission⁴³.

Donor Genotype	Recipient Genotype	Arthritis Development
WT	WT	0/20
Tnf^ΔARE/+	WT	19/21
Tnf^ΔARE/ΔARE TnfRI^−/−	WT	25/25
Tnf^ΔARE/+	TnfRI^−/−	0/8

ARE: adenosine- and uridine-rich elements; WT: wild-type.