27 July 2016
Vol 8, Issue 349

About The Cover

Cover image expansion

ONLINE COVER Let There Be Light. Thrombocytopenia, a condition characterized by a low number of platelets, can manifest from several different insults or from genetics, resulting in uncontrollable bleeding. Rather than platelet transfusion, laser light aimed at the body could stimulate platelet regeneration in vivo. Zhang et al. exposed mice to low-level laser light and found that it induced the generation of blood-producing cells, called megakaryocytes (on cover), in three different mouse models of thrombocytopenia, offering a drug-free, noninvasive therapy for this disease. [CREDIT: ZHANG ET AL./SCIENCE TRANSLATIONAL MEDICINE]