Many studies on bats’ high heart rate and metabolism, long life span, low tumor incidence, and asymptomatic ability to carry and transmit highly pathogenic viruses have been carried out, including the cell lines establishment of pteropid bat (41), the preparation of polyclonal antibodies of bat IgG, IgM, and IgA (37), the sequencing and assembly of bat genome (24), the establishment of the Bat1K genome consortium unites (42), etc. These efforts will provide the basis and technology for elucidating the innate and adaptive immune responses of bats. This evidence concerns the gene CD40LG and neoplasm.