An improved technique for the cryopreservation of Gaigeria pachyscelis (Sandveld hookworm)

Abstract

A technique for the cryopreservation of third-stage larvae of Gaigeria pachyscelis is described. It consists of incubating sheathed infective larvae at 37°C in 40% (v/v) ethylene glycol for 7 min, followed by 2 min at 0°C in 82,8% (v/v) cryoprotectant mixture, prior to transferring the larvae to liquid nitrogen. The survival rate obtained with this technique is consistently high: 69,1% as assessed by motility.The articles have been scanned in colour with a HP Scanjet 5590; 600dpi. Adobe Acrobat XI Pro was used to OCR the text and also for the merging and conversion to the final presentation PDF-format.mn201

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