Axion Biosystems has raised $6 million to back its Maestro multiwell microelectrode array platform, a high-throughput system for cellular analysis that enables researchers to recreate complex, active systems such as brain activity and heartbeats. It's life sciences instrumentation that's used for testing including drug safety, drug discovery, and disease modeling. The cash will go to growing the Atlanta, GA-based company's product line. "Axion's products are being adopted around the world at an ever-increasing rate," said CEO Tom O'Brien in a statement. "To maintain our rapid growth, we need to further invest in our global sales channel and in the support system for our expanding list of customers in pharma, biotech, academia and government." Release