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| Sperm cryopreservation has become an available option to allow fertility preservation in young men who are faced with surgery, radiotherapy or chemotherapy for cancer treatment. Also, it is an optimal choice for male partner with ejaculatory problem. Sperm can be preserved for several years if the storage is in liquid nitrogen tank at suitable temperature (- 196 oC). |
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Embryo cryopreservation (embryo freezing) |
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| Embryo freezing permits the excess embryos after single transfer to be frozen for the couple’s later use in non-stimulated cycle. |
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| Oocyte donation is now becoming a popular option due to better success rate in selected cases. Donor oocytes should be considered for women with ovarian failure, genetically-transmitted disease, diminish ovarian reserve and inaccessible ovaries. |
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| Sperm donation should be considered for male partners with extremely low sperm count, azoospermia (absent of sperm in the ejaculate) and genetically-transmitted disease. |
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| In general, sperm bank recruits healthy young donors having outstanding semen quality. All of sperm donors have been repeatedly screened for sexually transmitted infections before acceptance. |
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| Sperm specimens must be quarantined by storage in freezing tank and cannot be released for use unless the repeated HIV test is negative. |
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