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21.Yushkov,S.F., Vvedenskaya,N.Z., Merkulova,I.B., Zubruhina,G.N. (1982) – Pathomorphological and cytophotometric aspects of the mechanism of activity of Hanerol and Blastolysin, In: Current problems of experimental chemotherapy of cancer, Chernogolovka, vol.II, pp.153-154 (In Russian)
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23.Ketlinski,S.Z., Prokopieva,A.D., Prokopiev,Z.Z., Artyuhov,Z.I., Pasechnik,V.Z., Ogarkov,V.I. (1987) – About the mechanism of anticancer action of the fraction Blastolysin, separated from Lactobacillus Bulgaricus, Problems of oncology, vol.III, #3, pp.51-55 (In Russian)
24. Bogdanov, I G., (1982), Observations on the therapeutic effect of the anti-cancer preparation from Lactobacillus Bulgaricus “LB51″ tested on 100 oncologic patients, Sofia Press
25. Altaparmakov,I.A., Therapie mit DEODAN der durch Chemotherapie induzierten Leukopenie bei onkologischen Patienten, In: Rheinisch-Westfalische Gesellschaft fur Innere Medizin, Wissenschaftliche Referate, 159, Tagung, 4 und 5. Dezember 1992, Dusseldorf, p.24
26. Bogdanov,A., Popova,P., Studies on the effect of DEODAN on phagocyte activity of mice macrophages, In: XII National Conference of the Young Experts of Epidemiology, Varna, April 1991, p.11 (In Bulg.)
27. Guencheva,G., Popova,P., Mircheva,J., Bogdanov,A., Pacelli,E., Study on the influence of a glycopeptide from the cell walls of Lactobacillus Bulgaricus ” LB51″ – DEODAN on the functions of B-lymphocytes on mice – IInd National Conference on Immunomodulators, Sofia, May-June 1991 (In Bulg.)
28. Kutzarova,T., Popova,P., Mincheva,V., Bogdanov,A., Tzvetanov,Y., Guencheva,G., Study on the influence of a glycopeptide from the cell walls of Lactobacillus Bulgaricus ” LB51″ – DEODAN on the the murine peritoneal macrophages – IInd National Conference on Immunomodulators, Sofia, May-June 1991 (In Bulg.)
29.Popova,P., Baramova,E., Davidkova,G., Determination the activity of some lysosomial enzymes of murine macrophages after the application of a glycopeptide from the cell alls of Lactobacillus Bulgaricus “LB51″ – DEODAN, IInd National Conference on Immunomodulators, Sofia, May-June 1991 (In Bulg.)
30.Mincheva,V., Mihailova,S., Guencheva,G., Study on the influence of a glycopeptide from the cell walls of Lactobacillus Bulgaricus “LB51″ – DEODAN on the endogenious release of IL-1 and TNF – IInd National Conference on Immunomodulators, Sofia, May-June 1991 (In Bulg.)
31. Koichev,Ch., Popova,P., Guencheva,G., Bogdanov,A., Pacelli,E., Assessment of the impeded type of hypersensitivity reaction on mice after treatment with a glycopeptide from the cell walls of Lactobacillus Bulgaricus ” LB51″ – DEODAN – IInd National Conference on Immunomodulators, Sofia, May-June 1991 (In Bulg.)
32. Guencheva,G., Bogdanov,A., Pacelli,E., Opalchenova,G., Study on the influence of a glycopeptide from the cell walls of Lactobacillus Bulgaricus ” LB51″ – DEODAN on the resistence of mice against experimental bacterial infections – IInd National Conference on Immunomodulators, Sofia, May-June 1991 (In Bulg.)
33.Mincheva,V., Davidkova,G., Mihailova,Sn., Guencheva,G., Release of IL-1 and TNF from human monocytes under the influence of a glycopeptide from the cell walls Lactobacillus Bulgaricus “LB51″ – DEODAN – IInd National Conference on Immunomodulators, Sofia, May-June 1991 (In Bulg.)
34. Popova,P., Bogdanov,A., Study of the possibility to influence the neutropenia and the lymphoid organs’ atrophy caused by Cyclophosphamide after the application of a glycopeptide from the cell walls of Lactobacillus Bulgaricus “LB51″ – DEODAN on mice – IInd National Conference on Immunomodulators, Sofia, May-June 1991 (In Bulg.)
35. Guencheva,G., Bogdanov,A., Pacelli,E., Immunomodulating activity of DEODAN (a product from Lactobacillus Bulgaricus ” LB51″) orally administered on mice – Symposium of the International Association of Biological Standartization, Annecy, France, May 1991.
36. Guencheva,G., Bogdanov,A., Pacelli,E., Popova,P., Stimulating activity of DEODAN (a product from Lactobacillus Bulgaricus “LB51″) on macrophage activation and on host resistance to microbial infections – International Conference on “Microbial Infections – Role of Biological Response Modifiers”, Clearwater Beach, Florida, May 1991
37. Guencheva,G., Bogdanov,A., Pacelli,E., Mincheva,V., Endogeneous production of tumor necrosis factor and Interleukin-1 induced by DEODAN , a product from Lactobacillus Bulgaricus ” LB51″ – Tampa, Florida, May 1991.
38. Bogdanov,A., DEODAN – A Product from Lactobacillus Bulgaricus “LB51″, Orally Administered on Mice and Humans – Past, Present and Future – International Scientific Symposium “Immunomodulators. Preclinical and Clinical Evaluation”, Island of Capri, Italy, November 1991
39. Bogdanov,A., Guencheva,G., Pacelli,E., Mincheva,V., Mononuclear cells activation by DEODAN – a preparation from Lactobacillus Bulgaricus “LB51″ – VIII Congress of Immunology, Budapest, August 1992.
40. Pacelli,E., Popova,P., Davidkova,G., Bogdanov,A.,, Serum levels of TNF-alfa in mice orally treated with DEODAN – VIII Congress of Immunology, Budapest, August 1992
41. Davidkova,G., Popova,P., Guencheva,G., Bogdanov,A., Pacelli,E., Auteri,A., Mincheva,V., Endogenous production of tumor necrosis factor in normal mice orally treated with DEODAN – a preparation from Lactobacillus Bulgaricus “LB51″, In: International Journal of Immunopharmacology, Vol.14, No.8, pp.1355-1362, 1992, Pergamon Press.
42. Guencheva,G., Popova,P., Davidkova,G., Mincheva,V., Mihailova,Sn., Bogdanov,A., Pacelli,E., Auteri,A., Determination of cytokine release after in vivo and in vitro administration of DEODAN (a preparation from Lactobacillus Bulgaricus “LB51″) by the rabbit pyrogen test, In: International Journal of Immunopharmacology, Vol.14, No.8, pp.1429-1436, 1992, Pergamon Press.
43. . Popova,P., Guencheva,G., Davidkova,G., Bogdanov,A., Pacelli,E., Opalchenova,G., Kutzarova,T., Koychev,Ch., Stimulating effect of DEODAN (an oral preparation from Lactobacillus Bulgaricus “LB51″) on monocytes/macrophages and host resistance to experimental infections, In: International Journal of Immunopharmacology, Vol.15, No.1, pp.25-37, 1993, Pergamon Press.
44. Usheva,R., Yotov,G., Bogdanov,A., Treatment of the postcytostatic cytopenia with DEODAN – Vth National Congress on Clinical and Transfusion Haematology, Sofia, 29 – 31.10.1993.
45. Popova,P., GuenchevaG., Bogdanov,A, Lactobacillus Bulgaricus (strain LB51) – an oral preparation with immunomodulating activity – VI International Conference on Immunopharmacology, Prague, May 29 – June 1, 1994.
46. Usheva,R., Bogdanov,A, Treatment of postcytostatic cytopenia with DEODAN (an oral preparation on the basis of Lactobacillus Bulgaricus “LB51″) on patients with haematological diseases, VI International Conference on Immunopharmacology, Prague, May 29 – June 1, 1994.
47. Altaparmakov,I., Bogdanov,A, Pacelli,E., Study of the effect of DEODAN (an oral preparation on the basis of Lactobacillus Bulgaricus ” LB51″) on neutropenia, induced by chemotherapy, in oncological patients, VI International Conference on Immunopharmacology, Prague, May 29 – June 1, 1994.
48. Popova,P., Guencheva,G., Bogdanov,A, Pacelli,E., Opalchenova,G., Stimulating effect of an oral preparation from Lactobacillus Bulgaricus (strain LB51) on host resistance to experimental bacterial infections, In: Immunotherapy of Infections, New York, Marcel Dekker, Inc., 1994, pp. 339-349
49. Krusteva Elisaveta, Hristova Svetlomira, Damyanov Danail, Bogdanov,Assen, Altaparmakov Ivan, Pacelli Edoardo, Clinical study of the effect of the preparation DEODAN on leukopenia, induced by cytostatics, 1st European Conference on Immunopharmacology, Berlin, May 26-29, 1997.
50. Krusteva Elisaveta, Hristova Svetlomira, Damyanov Danail, Bogdanov,Assen, Altaparmakov Ivan, Pacelli Edoardo, Clinical study of the effect of the preparation DEODAN on leukopenia, induced by cytostatics In: International Journal of immunopharmacology, Vol. 19, No. 9/10, pp.487-492, 1997, Elsevier Science Ltd.
51. Nikolov, P., Bogdanov, I., Spassova, Z., Deredjian, S., Nikolov, R., Baleva, M., Krustev, Z. Fecal serum IgA in patients with chronic inflammatory intestinal diseases in clinical remission before and after the intake of probiotic. Bulgarian Hepatogastroenterology, #3/2010.
52. Nikolov, P., Bogdanov, G., Spassova, Z., Deredjian, S., Nikolov, R., Baleva, M., Krustev, Z. Increased serum IgA in patients with ulcer colitis in clinical remission. Bulgarian Hepatogastroenterology, #3/2010.
53. Bogdanov, G., Boyadjieva, N. Probiotics and metabolic syndrome. Medical Practice, #5/2011.
54. G. Bogdanov, T. Handjieva-Darlenska, N. Boyadjieva. Effects of probiotics in obese rats. 9th ISORD 2011/ P19
55. Bogdanov I.A., Bogdanov G.A., Bogdanov A.I., Bogdanov I.G. Effects from the application of crude extracts from a special strain of Lactobacillus bulgaricus on cases of different skin tumors. Dermatol Venerol 2017;1:34-40.