作者将日本乙型脑炎病毒經口接种于棉鼠,使其感染已获成功。病毒經口服后而达于中枢神經,所引起的組織学的变化就象已經注意到的。当把此種病毒接种于脑的时候而引起的变化一样,类似的組織学的变化也已被发现于脊髓中。病毒在腸道上皮所引起的細胞內的浸潤就象脊髓灰白質炎病毒一样。日本乙型脑炎病毒口服后,于3至4天内在大便 The author orally inoculated Japanese B encephalitis virus in cotton rats, the infection has been successful. As the virus reaches the central nervous system after oral administration, the histological changes caused are as already noted. Similar changes in histology have also been found in the spinal cord as changes occur when the virus is inoculated into the brain. Intracellular infiltration of the virus in the gut epithelium is just like that of the poliovirus. Japanese encephalitis virus in the stool after 3 to 4 days after oral administration