Before and After Chemotherapy (IMAGE) Children's Hospital Los Angeles Caption This is a bone marrow biopsy from a child with acute lymphoblastic leukemia at diagnosis (left) and after the first four weeks of induction chemotherapy (right). Credit Children's Hospital Los Angeles 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.