The orientation of the chicken (Gallus gallus) IGH locus on the chromosome 31 is reverse (REV).
Colors are according to IMGT color menu for genes.
The boxes representing the genes are not to scale. Exons are not shown.
IGH gene designations according to the IMGT nomenclature .
Single arrows show genes whose polarity is opposite to that of the D-J-CLUSTER comprising IGHD(D1 to D4)-IGHJ1.
The localization numbers 64, 52, 33 and 27 were not assigned to gene names owing to too degenerate sequences.