1- Aziz, D. M., L. Ahlswede, and H. Enbergs. 2005. Application of MTT reduction assay to evaluate equine sperm viability. Theriogenology, 64: 1350-1356.
2- Brostrom, O. 1990. Prognosis in ulcerative colitis. Medical Clinics of North America, 74: 201-218.
3- Byun, J. W., S. H. Choo., H. H. Kim., Y. J. Kim., Y. J. Hwang, and D. Y. Kim. 2008. Evaluation of boar sperm viability by MTT reduction assay in Beltsville Thawing Solution extender. Asian-Aust. Journal of Animal Science, 4: 494-498.
4- Dalgleish, A. G, and K. O’Byrne. 2006. Inflammation and cancer: the role of the immune response and angiogenesis. Cancer Treat Research, 130: 1-38.
5- Dermar, D. A. 2001. The Review of Natural Product. Facts and Comparisons, 13: 405-409.
6- Dixit, D., S. Baboota., K. Kohli., S. Ahmad, and G. Ali. 2007. A review of pharmacological aspects and bioavailability enhancement approaches. Indian Journal of Pharmacology, 39: 172-179.
7- Reiter, R. J., D. Tan, and L. C. Manchester. 2001. Biochemical reactivity of melatonin with reactive oxygen and nitrogen species. Cell Biochemistry and Biophysics, 34: 237-256.
8- Evans, G., W. M. S. Maxwell, and T. Ahemen. 2013. Sperm quality and testicular morphometry of rabbits fed dietary levels of water spinach (Ipomoea aquatica) leaf meal. Agriculture and Biology Journal of North America, 4(3): 352-357.
9- Fadeel, B., S. Orrenius, and B. Zhivotovsky. 1999. Apoptosis in human disease: a new skin for the old ceremony?. Biochemical and Biophysical Research Communication, 266(3): 699-717.
10- Favier, A. E., J. Cadet., B. Kalyanaraman, and M. Fontecave. 1995. Analysis of free radicals in biological systems. Birkhauser Verlag, 38(2): 145-158.
11- Feher, A., I. Lang, and K. Nekam. 1990. Involvement and mechanism of lipid peroxidation in biological system. Biochemical Science, 15: 129-135.
12- Gibbons, B. H, and I. R. Gibbons. 1998. Lithium reversibly inhibits microtubule-based motility in sperm flagella. Nature, 309: 560-562.
13- Jackson, D. M., O. F. Jenkins, and B. Ross. 1988. The motor effects of bromocriptine- A review. Psychopharmacol, 95: 433- 46.
14- Jurjus, A. R, and N. N. Khoury. 2004. Animal models of inflammatory bowel disease. Journal of Pharmacological and Toxicological Methods, 50: 81-92.
15- Kang, J. S., Y. J. Jeon., S. K. Park, and K. H. Yang. 2004. Protection against lipopolysaccharide- induced sepsis and inhibition of interleukin - 1beta and prostaglandin E2 synthesis by silymarin. Biochemical and Pharmacology, 67(1): 175-81.
16- Kidd, P, and K. Head. 2005. Biochemical effect of the flavolignan silibin on RNA, protein and DNA synthesis in rat liver, Alternative Medicine Review, 10: 193-203.
17- Manna. S. K., A. Mukhopadhyay, and B. B. Aggarwal. 1999. Silymarin suppresses TNF-induced activation of NF-kappa B, c-Jun N-terminal kinase, and apoptosis. Journal of Immunology, 163(12): 6800-6809.
18- Radko, L, and W. Cybulski. 2007. Application of silymarin in human and animal medicine. Journal of Pre-Clinical and Clinical Research, 1(1): 022-026.
19- Rosa, H. J. D, and M. J. Bryant. 2003. Seasonality of reproduction in sheep. Small Ruminant Research, 48: 155-171.
20- Sanocka, D, and M. Kurpisz. 2004. Reactive oxygen species and sperm cells. Reproductive Biology and Endocrinlogy, 2: 12-19.
21- Srinivas, P., T. M. Vijaykran., H. V. Mahes, and H. Ganes. 2013. Evaluation of the protective effect of silymarin on doxorubicin induced chronic testicular toxicity in parts. International Journal of Pharmacology and Biology Sciences, 4(1): 473-484.
22- Toovey, S., E. Hudson, and W. F. Hendry. 1989. Sulfasalazine and male infertility. Reversibility and possible mechanism. Gut, 22: 445-451.
23- Watters, D, and M. Lavin. 2005. Signalling Pathways in Apoptosis. CRC Press, Boca Raton, Florida.
24- Wood, A. J. J. 1994. Lithium in the treatment of mood disorders. New England Journal of Medicine, 331(9): 591-8.
25- Zaneveld, L. J. D., R. T. Chatterton, and J. Wiley. 1982. Biochemistry of Mammalian Reproduction. J. Wiley Press, New York.