Injection of a hydrogel that mechanically resembles a blood clot promotes the growth of new blood vessels in mice.

The vesicles promote metastasis after chemotherapy, but the authors say the results shouldn’t alarm patients and may point to ways to improve treatments.

When a mouse’s brain undergoes traumatic injury, immune cells clear the dead from the affected area, after which blood cells swoop in to repair blood vessels.

Using single-cell RNA sequencing, scientists characterize new populations of dendritic cells and monocytes.

Researchers document the diverse roles of immune cells in neuronal health and disease.