The cell line BE(2)-M17 was isolated from SK-N-BE(2) by limiting dilution. The cells show a population doubling time of 20-24 hours, grow in multi-layers but start to aggregate and float as the culture ages. The neuroblastic cells express properties of neuroadrenergic neurones and multiple, moderately long cell processes. BE(2)-M17 showed tyrosine hydroxylase and dopamine-�-hydroxylase activity and specific uptake of norepinephrine (noradrenalin). Expression of intermediate filaments was detected as well as neuron-specific enolase and moderate expression of vimentin. BE(2)-M17 are tumorigenic in nude mice.