Neurons provide critical signals that regulate both the number and differentiation of glia. In addition, glia are attracted to and enwrap neuronal axonal processes. FGF-like signalling is thought to be one of the many potential axon-derived morphogenetic signals, however, the multiple roles of FGFs have made experimental tests of these signals difficult in vivo. In the Drosophila FGF receptor m...

I N the past four years there has been an enormous increase in research involving basic fibroblast growth factor (FGF) t as a result of the development of effective methods for the isolation of the protein and the availability of characterized nucleic acid probes, specific antibodies, and recombinant growth factor. Several reviews have been published describing much of the basic biology of acid...