Straw provided with an identification rod for the freeze-storage of mammalian embryos

摘要

The straw 1 comprises a second end-sealing plug 3 which is a rod 31 made of a synthetic material, the body 32 of which is broader than that of the said straw 1 and the tip 34 of the said rod 31 bursts the bubble 7 which in the course of thawing rises along the fraction of the medium in which the cryoprotective substance is diluted, and force-fitted through at least one flat surface in one of the ends 14 of the straw 1 once it has been filled to a length which is selected at will to give the said bubble 7 precise dimensions. Application to the identification of frozen embryos. IMAGE