We modified the method of somatic cell fusion for neurons to improve t
he efficiency of hybrid production. C1300 neuroblastoma cells were inc
ubated with emetine and actinomycin D before fusion. After fusion betw
een C1300 cells and adult mouse dorsal root ganglia neurons with polye
thyleneglycol, we were able to select the hybrids from non-fused cells
. We obtained hybrid clones at high efficiency (7.2 clones/10(4) neuro
ns).