Micromanipulation Petri Dish (IMAGE) University of Hawaii at Manoa Caption This is a close up of the micromanipulation Petri dish, in which oocytes are injected with round spermatids. Also visible are gamete holding (left) and injecting (right) glass pipettes. The procedure is done under 200x magnification on the stage of an inverted microscope. Institute for Biogenesis Research, John A. Burns School of Medicine, University of Hawai'i. Credit David Beales Usage Restrictions None 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.