Table 4: Detection of EBV latent LMP1 and lytic BZLF1 proteins in MG thymus by immunohistochemistry.

PatientThymicAnti-AChREBV proteinsb
pathologyantibodiesaLMP1BZLF1

MG1HyperplasiaPositive++
MG5HyperplasiaPositive++
MG6HyperplasiaPositive++
MG9HyperplasiaSN++

MG11ThymitisPositive+
MG13ThymitisPositive+

MG16InvolutedPositive++
MG17InvolutedPositive++

Ctr1cNormalSN
Ctr2cNormalSN

aSN: seronegative (AChR- and MuSK-negative) patients. bResults of immunostaining for LMP1 and BZLF1 are expressed as follows: + presence of positive cells; − absence of positive cells. cCtr: nonpathological control thymus.