Southern blotting hybridization of the BC48 of B. caballi. Genomic DNA (10 μg per lane) from B. caballi merozoites was digested with the indicated enzymes (lane 1, HindIII; lane 2, SacI; lane 3, EcoRV; lane 4, SalI; lane 5, KpnI; lane 6, DraII; lane 7, PvuII; lane 8, AccI; lane 9, StyI; lane 10, PstI) and hybridized with the 32P-labeled BC48 cDNA. Molecular size markers are shown on the left (in kilobase pairs).