Mosquito Circulatory System (IMAGE) Vanderbilt University Caption This microscopic fluorescent image of the mosquito's circulatory system shows muscle cells in green; cellular DNA in blue and periostal hemocytes in orange. Credit Hillyer Lab / Vanderbilt University 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.