DNA sequences were isolated from a single PSC (ZGP5) and a single MAW (ZGA2) compared with representative antigen B sequences deposited in the GenBank databases. Subfamilies 1, 2 and 5 each consist of one gene, termed EgAgB1/1 (accession no. AY871019), EgAgB2/1 (AY569341) and EgAgB5/1 (AB260973), indicated by B1/1, B1/2 and B5/1, respectively; subfamily 3 has four genes, named EgAgB3/1 (AY871026), EgAgB3/2 (AY871015), EgAgB3/3 (DQ137844) and EgAgB3/4 (DQ174241), indicated by B3/1, B3/2, B3/3 and B3/4, respectively; and subfamily 4 has three genes, named EgAgB4/1 (AY357114), EgAgB4/2 (AY569350) and EgAgB4/3 (AF252859) indicated by B4/1, B4/2 and B4/3, respectively. Homologies are assigned with black representing identity in at least six sequences and white representing different nucleotides. Missing or unmatched sequence is hyphenated.