Specificity of the PCMV-LAMP assay and PCR. (A) Specificity of LAMP among different species. (B) Specificity of PCR among different species. M: DL-2000 DNA ladder marker; 1: +, positive control; 2: –, negative control; 3: human herpesvirus 6 (HHV-6); 4: HHV-7; 5: HCMV; and 6: PCMV. All products were electrophoresed on 2% agarose gels and stained with ethidium bromide.