Table 4. Review of MHC structure in galliform species.

Species	Code	N loci	gDNA	cDNA	Y locus	Gene Names	References
Coturnix japonica	Coja	7	+	+	?	DAB1, DBB1, DCB1, DDB1,DEB1, DFB1, DGB1	[39]–[41]
Gallus gallus	Gaga	2	+	+	+	BLB1, BLB2	[24], [26], [34], [40], [69]
Gallus lafayetii	Gala	?	+	−	?	−	[94]
Meleagris gallopavo	Mega	3	+	+	+	−	[72], [82]
Numida meleagris	Nume	?	+	+	?	−	[95]
Pavo cristatus	Pacr	3	+	−	?	−	[96]
Perdix perdix	Pepe	2	+	+	?	DAB	this study
Phasianus colchicus	Phco	2	+	+	+	DAB1, DAB2	[13], [37], [40], [81]
Tetrao tetrix	Tete	2	+	+	+	−	[32]
Tympanuchus cupido	Tycu	4	+	−	+	−	[73]

Most galliform species display low number of MHCIIB loci, except the migratory Japanese Quail (Coturnix japonica). The second genetically unlinked MHC region called Y locus has been found in half of them. Columns gDNA and cDNA show what kind of template was used in the studies. Species are ordered alphabetically. Used symbols:+yes, - no, ? yet unknown.