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Effect of Zona Incision by Piezo-Micromanipulator (ZIP) on In Vitro Fertilization in 21 Transgenic Mice Lines OAK
KAWASE, Yosuke; TACHIBE, Takanori; HANI, Toshio; TATEISHI, Hiromi; JISHAGE, Kou-ichi; SUZUKI, Hiroshi; 鈴木, 宏志.
Zona incision using a piezo-micromanipulator (ZIP) has been demonstrated to be effective for in vitro fertilization (IVF) using cryopreserved C57BL/6 spermatozoa. In this study, ZIP oocytes inseminated with frozen-thawed genetically modified C57BL/6J or FVB mice spermatozoa (21 lines) showed fertilization rates of 22-75% and live fetus rates of 8-49%. In 6 of the lines, the fertilization rates for oocytes compared with ZIP (42-75%) were significantly higher than that of nontreated oocytes (0-50%). Using only 90 oocytes for IVF with ZIP, 5 breeding pairs were produced from cryopreserved genetically modified mice spermatozoa. Our results indicate that application of the ZIP technique is effective for IVF using cryopreserved genetically modified mouse...
Palavras-chave: Frozen-thawed spermatozoa; IVF; ZIP.
Ano: 2009 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3017
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