1. Bakal PM, in’t Veld N (1979) Response of white mice to inoculation of irradiated organisms of the Toxoplasma strain RH. Parasitol Res 59(3):211–217
2. Benetti GP, Illeni MT, Passera A, Bombelli G, Lavecchia G, Uslenghi C (1994) Ex vivo evaluation of pidotimod activity in patients with chronic obstructive pulmonary disease. Drug Research 44(12A):1503–1505
3. Bisetti A, Ciappi G, Bariffi F, Catena E, Rocco V, Vaccaro L, Grassi V, Scarpazza G, Bertoli L, Cardani A (1994) Evaluation of the efficacy of pidotimod in the exacerbations in patients affected with chronic bronchitis. Drug Research 44(12A):1499–1502
4. Bunnell BA, Morgan RA (1998) Gene therapy for infectious diseases. Clin Microbiol Rev 11(1):42–56
5. Casciotti L, Ely KH, Williams ME, Khan IA (2002) CD8(+)-T-cell immunity against Toxoplasma gondii can be induced but not maintained in mice lacking conventional CD4(+) T cells. Infect Immun 70(2):434–443