This study was carried out in strict accordance with the recommendations in the Guide for the Care and Use of and control (DEREG 2/2 ) mice both infected i.c. with rMV-green and treated with DT. The reduction of mean values from 50 to 8 was significant, with P = 0,0098. The number of infected eGFP + cells per brain was determined by microscopic evaluation of 100 mm sections through the complete cerebrum as described [33] . doi:10.1371/journal.pone.0033989.g004