J_spacer
12 or 23 nucleotide spacer between the J-nonamer and the J-heptamer of a J-gene recombination feature of an immunoglobulin/T-cell receptor gene.
SO:0000563
vertebrate_immune_system_gene_recombination_spacer
is_a
SO:0000302
J_gene_recombination_feature
part_of
J spacer
exact
J-SPACER
exact