METHOD AND KIT FOR CRYOPRESERVING XENOPUS LAEVIS EGG EXTRACT, CONCENTRATED XENOPUS LAEVIS EGG EXTRACT, AND METHOD FOR ANALYZING CELL CYCLE

摘要

A method for cryopreserving a Xenopus laevis egg extract, characterized by comprising a partition step for partitioning the Xenopus laevis egg extract into water and solid matters and a freezing step for separately freezing the water and the solid matters.