The “Hydra XIII” Summer School provided a critical analysis of contemporary issues in stem cell biology. During the in-depth, week-long programme, participants  attended lectures and workshops on: The biology of stem cells – embryonic, fetal and adult systems Plasticity, epigenetic regulation, signaling and niche Clinical applications and clinical trials Ethics and patents in stem cell research. Dr. Kim Jensen (from the University of Copenhagen) was one of the key organisers. Two students, Else Driehuis from KNAW and Alfonso Tedeschi from UCL, participated…