Figure 3: HSV typing via RFLP analysis. Electrophoresis of representative nested-PCR products, positive for HSV, digested with MspI. M: 50 bp marker (New England Biolabs), 1: undigested nested-PCR product (142 bp), 2: positive control containing both HSV-1 (98 bp) and HSV-2 (142 bp) genomic sequences, 3-4: cases infected by HSV-1, and 5: case harboring both HSV-1 and -2.