Tadpole Retina (image) McGill University Share Print E-Mail Caption Tadpole eye stained to reveal cannabinoid receptors (red). A single fluorescently labeled cell (green) is shown at greater magnification to the right. Credit Dr. Loïs Miraucourt Usage Restrictions Please credit photo to Dr. Loïs Miraucourt Share Print E-Mail 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.