Healthy v. abnormal cells (IMAGE) Northwestern University Caption This image contrasts relatively normal oocytes (at the bottom right) with abnormally shapped ones (bottom left). Credit Ilya Ruvinsky/Northwestern University Usage Restrictions Add credit License Original 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.