AMKL Cell (IMAGE) St. Jude Children's Research Hospital Caption Acute megakaryoblastic leukemia (AMKL) is a rare cancer of megakaryocytes, blood cells that produce the platelets that help blood clot. Credit St. Jude Children's Research Hospital / Tina Motroni 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.