Card with mouse freeze dried sperm. (IMAGE) Cell Press Caption This photo shows a Happy New Year card in Japan attached with mouse freeze dried sperm. Credit Daiyu Ito, University of Yamanashi Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. Adaptations must be shared under the same terms. License CC BY-NC-SA Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.