The baboons given Vasalgel a year ago have reached a milestone – no pregnancies in their groups, confirming the efficacy of the polymer as a contraceptive. Additional studies have been started to better understand “reversibility” to return sperm flow. Making and testing the batches of Vasalgel to be used in clinical trials is well underway. For more information, see our recent email update. You can sign up to receive updates in your inbox at the Vasalgel home page.