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Production of Handmade Open Pulled Straw (OPS) Using Digital Heating Gun for the Vitrification Process

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BACKGROUND: Vitrification is the most popular technique for the cryopreservation of oocytes and embryos, replacing slow freezing methods. MATERIALS AND METHODS: This study evaluated the efficient manufacturing methods of handmade open pulled straw (OPS) with a digital heating gun that could be proposed for vitrification. RESULTS: Production efficiency of OPS using 0.5 mL straw was detected at 0, 66.1, 90.5 and 85.7% for 1∼2 s and 9.5, 33.3, 47.6 and 23.8% for 2∼3 s of heating time at 250, 350, 400 and 450°C respectively. The production rate of OPS using 0.25 mL straw was perceived at 33.3, 76.2, 83.3, 95.2 and 57.6 % for 1.5∼2.5 s time with the optimized heat setting at 330, 340, 350, 360 and 370°C respectively. The desired inner diameter (200∼300 μm) of OPS could be varied according to the gamete size, embryo developmental stages or cell lines of different species. Based on our data, the production efficiency of OPS using 0.25-mL straw were increased beyond using a 0.5-mL straw. CONCLUSION: Handmade OPSs could be efficiently produced with a digital heating gun to generate a vitrification device for freezing gametes, embryos and cell lines.
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Document Type: Research Article

Publication date: November 1, 2019

More about this publication?
  • CryoLetters is a bimonthly international journal for low temperature sciences, including cryobiology, cryopreservation or vitrification of cells and tissues, chemical and physical aspects of freezing and drying, and studies involving ecology of cold environments, and cold adaptation

    The journal publishes original research reports, authoritative reviews, technical developments and commissioned book reviews of studies of the effects produced by low temperatures on a wide variety of scientific and technical processes, or those involving low temperature techniques in the investigation of physical, chemical, biological and ecological problems.

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