  We consider the $n{\times}n$ matrix linear differential systems in the
complex plane. We find necessary and sufficient conditions under which these
systems have meromorphic fundamental solutions. Using the operator identity
method we construct a set of systems which have meromorphic solutions. We prove
that the well known operator with the sine kernel generates a class of
meromorphic Painleve type functions. The fifth Painleve function belongs to
this class. Hence we obtain a new and simple proof that the fifth Painleve
function is meromorphic.
