/tags/cryopreservation cryopreservation en-US Copyright Mon, 18 May 2015 10:00:00 GMT /local-news/2015-05-18/cincinnati-zoo-produces-cats-using-glass-sperm The Cincinnati Zoo has produced what's believed to be the first non-human offspring using "glass" sperm. They are kittens named Elsa and Vito.The Center… Mon, 18 May 2015 10:00:00 GMT /local-news/2015-05-18/cincinnati-zoo-produces-cats-using-glass-sperm Ann Thompson