12 primary neuroblastomas ( nb ) of different maturation stages , 2 ganglioneuromas ( gn ) , and 2 neuroblastoma cell lines were analysed for rna expression of the protooncogene n-myc and the gene encoding the nerve growth factor receptor ( ngf-r ) by northern-blots , rna-dot-blots and for receptor presence by immunohistological procedures .
C0040649
rna expression
C0035668
rna