Complex sentence: The DR3-DQ2 component is not uncommon in Europe, it is shared by the northwest European ancestral haplotype AH8.1 and also appears within certain European groups with the Afro-Central Asia haplotype A33-B58.
Split into simpler sentences: The DR3-DQ2 component is not uncommon in Europe and is shared by the northwest-European ancestral haplotype AH8.1. Furthermore, the DR3-DQ2 component appears within certain European groups with the Afro-Central Asia haplotype A33-B58.