In “Nature Communications,” Max Delbrück Center researchers show how immune cells initiate zebrafish heart regeneration, highlighting the possibility that precisely timed inflammatory signaling of specific immune cells — rather than broad suppression — could inform new approaches to cardiac repair.

This study maps the immediate transcriptional response after zebrafish heart injury and shows that fine-tuning early immune signals can further improve regeneration.

Confinement of active flows influences chemical signal transport, changing speed by up to a factor of 8, offering insights on biochemical signaling in processes like embryogenesis.