CycleBeads (IMAGE) Georgetown University Medical Center Caption To help women who follow the Standard Days Method of family planning to know on which days pregnancy is likely or unlikely, the Institute for Reproductive Health at Georgetown University Medical Center developed CycleBeads, a string of 32 color-coded beads with each bead representing a day of the menstrual cycle. Credit Institute for Reproductive Health, Georgetown University Medical Center Usage Restrictions Photo credit to Institute for Reproductive Health, Georgetown University Medical Center License Licensed content 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.