Hemolymph (image) University of California - San Diego Share Print E-Mail Caption To measure energy levels in honey bees, researchers extracted their "blood" (hemolymph) using a microcapillary tube. Credit Riccardo Cabbri Usage Restrictions Must be used in conjunction with Tosi et al paper. 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.