  Reaction diffusion systems with Turing instability and mass conservation are
studied. In such systems, abrupt decays of stripes follow quasi-stationary
states in sequence. At steady state, the distance between stripes is much
longer than that estimated by linear stability analysis at a homogeneous state
given by alternative stability conditions. We show that there exist systems in
which a one-stripe pattern is solely steady state for an arbitrary size of the
systems. The applicability to cell biology is discussed.
