UC Riverside Entomologists (2 of 2) (IMAGE) University of California - Riverside Caption Warren MacDonald (left), Bart Bryant and Alexander Raikhel (seated) take a look at an image of a female Aedes aegypti mosquito whose gut has undigested blood. The researchers developed a method that deactivates a key microRNA in the mosquito; this miccroRNA is responsible for blood digestion and egg development. Credit UCR Strategic Communications. 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.