Table 1.

APC used

Cell line	Constitutive expression			Ref.
	Class II	Ii	HLADM
M1*	—	−	−	18
M1.DR1 or DR3	DR1 or DR3†	−	−	19
M1.DR1/3.Ii	DR1 or DR3†	+†	−	19
M1.DR1/3. DM	DR1 or DR3†	−	+†
M1.DR1/3. Ii.DM	DR1 or DR3†	+†	+†
M1.DR1.B7	DR1† + B7.1†	−	−	20
B-LCL HOM2	DR1	+	+	§
B-LCL VAVY	DR3	+	+	§
T2.DR3‡	DR3†	+	−	21
PBMC	DR1 or DR3	+	+

^*Inducible only for HLA-DM expression. 

^†By transfection. 

^‡Kind gift from Peter Cresswell (Yale University, New Haven, CT). 

^§Tenth International Histocompatibility Workshop.