Pertaining to a junction: as, “junctional lines,”

adjective. Of, pertaining to, situated at, or operating at a junction

"Humans that have a mutation in laminin-332 genes (at least 3 different LAMA genes), on the other hand, suffer a condition called junctional epidermolysis bulossa (or JEB) also characterized by severe skin layer separation and blistering."

cell-specific  cellsurface  cell­cell  costimulatory  hydrogen-bonded