The major histocompatibility complex (Mhc) class IIB region has greater genomic structural flexibility and diversity in the quail than the chicken

Table 6 Candidate rearrangement elements (TB1–4) identified within the Tapasin-BRD2 segment

Name	Features and sequence of repeat unit	Quail					Chicken
		HT1	HT2	HT3	HT4	HT5	B12	B21
	TCF-I [37]
TB1	MAMAGⁿ	13*	13	26	27	23	3	3
	STRs in H-2 class II region [38]
TB2	CAGAⁿ	86	54	>14	Un	56	5	5
TB3	CAGGⁿ	120	75	>21	Un	99	6	6
	Recombination hotspot motif [39]
TB4	GGGCAGGARGⁿ	9	4	>1	Un	5	1	1
	Total	228	146	>62	>27	183	15	15

ISSN: 1471-2164