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A ova bank, or cryobank or egg cell bank is a facility that collects and stores human ova, mainly from ova donors, primarily for the purpose of achieving pregnancies of either the donor, at a later time (i.e. to overcome issues of infertility), or through third party reproduction, notably by artificial insemination. Ova donated in this way are known as donor ova. ==General== There are currently very few ova banks in existence.〔(Centre for Reproductive Medicine of UZ Brussel having an ova bank )〕〔(The Bandra-based Lilavati Hospital having an ova bank )〕〔(Renji Hospital, Shanghai having an ova bank )〕 Generally, the main purpose of storing ova, at present, is to overcome infertility which may arise at a later age, or due to a disease. The ova are generally collected between 31 and 35 years of age.〔(Age of woman when collecting ova )〕 The procedure of collecting ova may or may not〔http://www.rhtp.org/fertility/assisted/documents/OvarianStimulationandEggRetrieval-Issues.pdf〕 include ovarian hyperstimulation.〔(Procedure of collecting ova )〕 It can be expected however that ova collection will become more important in the future, i.e. for third party reproduction, and/or for producing stem cells, i.e. from unfertilized eggs (oocytes).〔(Stem cell production from oocytes )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ova bank」の詳細全文を読む スポンサード リンク
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