Neuron Tracing (IMAGE) Cincinnati Children's Hospital Medical Center Caption This image uses viral tracing to map connected neurons for an antagonistic muscle pair in a Bax-Bax double mutant adult mouse. Researchers report in the journal Neuron that molecular signaling from the Bax/Bak's pathway is important for maturing mice to develop synergistic connections between the brain and opposing muscle pairs. Credit Cincinnati Children's 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.