<s>[INST] in biopsy tissues did not work what i have do ? is there any thing to help me i wish to be father now i am 31 year of age [/INST] Hi, Thanks for your query. I have read your query & I understand your concerns. If you have no sperms in biopsy tissue then you must be suffering from azoospermia. I request you to consult an infertility specialist for donor sperm insemination option. I hope I answered your query. I will be available for any followup queries you have. Regards, Dr.Mahesh Koregol IVF & Infertility Specialist. </s>