Cluster of neurons extending cell projections (neurites) to explore and connect (form synapses) to other cells. This image won second place in the EPSRC photo competition in the Eureka section for this year. From the work of George Joseph, RegenMed DTC, Keele University. (Blue: nuclei; Green: Functional component of the nervous system (neuron cells); Red: Supporting cells called glial (astrocytes))