Immune cells (IMAGE) Walter and Eliza Hall Institute Caption Australian researchers have used powerful 'single cell multi-omics' technologies to discover a previously unknown ancestor of T and B lymphocytes (pictured), which are critical components of our immune system. Credit WEHI, Australia Usage Restrictions With credit 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.