The findings in mice may explain how addictive drugs hijack natural reward processing systems, creating the urge to use while throwing natural urges to eat and drink off-kilter.
Retinoic acid, the active state of Vitamin A, appears to regulate how stem cells enter and exit a transient state central to their role in wound repair.
uLIPSTIC, an updated method for directly observing physical interactions between cells, could allow scientists to one day map every possible cell interaction.