RETRACTABLE TOOL AND METHOD FOR MANIPULATING DEVELOPMENTAL CELLS IN A PROCESS OF CRYOPRESERVATION

摘要

A tool for manipulating a biological sample for vitrification and storage. The tool includes an elongated stem having opposed actuation end and operative end, and a sample loading portion mounted at the operative end of the elongated stem. The sample loading portion extends axially from the elongated stem. The tool also includes a sleeve capable of telescoping movement on said stem. The stem, including the loading portion can be retracted into and extended out from the sleeve for protection and exposure, respectively.