  We present experimental results on the tunneling into the edge of a two
dimensional electron gas (2DEG) obtained with GaAs/AlGaAs cleaved edge
overgrown structures. The electronic properties of the edge of these systems
can be described by a one-dimensional chiral Tomonaga-Luttinger liquid when the
filling factor of the 2DEG is very small. Here we focus on the region where the
Tomonaga-Luttinger liquid breaks down to form a standard Fermi liquid close to
$\nu=1$ and show that we recover a universal curve, which describes all
existing data.
