On the other hand, as for latent infection of neurons, in the search for molecules with homology to paired immunoglobulin-like type 2 receptor α (PILRα)—which was identified as a cellular receptor for HSV-1 belonging to the same α-herpes subfamily—myelin-associated glycoprotein (MAG), which is specifically expressed in neurons, was identified [19]. Here, MAG is linked to disease arising from reactivation of latent virus.