Complex sentence: Restriction endonuclease assay (REA) and random amplification of polymorphic DNA (RAPD) helped characterize the different genotypes of "M. mycetomatis", namely 2 genotypic clusters in Africa, and 7 different genotypes from other continents.
Split into simpler sentences: Restriction endonuclease assay (REA) and random amplification of polymorphic DNA (RAPD) were performed to characterize the different genotypes of "M. mycetomatis". These methods identified 2 genotypic clusters in Africa, and 7 different genotypes from other continents.