1. Heterozygous for all alleles in MHC II
DRA-m or p DRB1-m
DRA-m or p DRB1-p
DRA-m or p DRB3,4, or 5 m
DRA-m or p DRB3,4, or 5 p
DQA-m DQB-m
DQA-p DQB-p
DQA-m DQB-p
DQA-p DQB-m
DPA-m DPB-m
DPA-p DPB-p
DPA-m DPB-p
DPA-p DPB-m
Makes 12 (and some 16)
“HLA heterozygous individuals can express up to six class I and eight class II” - quote in Ch 3 conflicts with Figure A3.9 and my calculations

2. T cell lineage (Chapter 5)
Rearrangement
order
Outcome
  and  are rearranged ---> cell
   and  are rearranged ---> cell
   and  are rearranged ---> cell
  and  are rearranged ---> cell
   and  are rearranged ---> cell
   rearranged ( rearranged&excised) ---> cell
   and  are rearranged ---> cell
   and  are rearranged ---> cell
   and  are rearranged ---> cell
   and  are rearranged ---> cell
   rearranged ( rearranged&excised) ---> cell