The Church may be the mystical body of Christ but it seems to me to be so only in its wholeness. With Paul I would have to say that no particular church can contain or be the subsistence of that wholeness ...
Ray,
I decided to separate this from my previous reply, so as to avoid starting that one on a negative note. However, I wanted to point out that this depends on whether you mean a particular church
in isolation from other churches, or a particular church
in communion with its bishop, who serves as the guarantor of communion with the entire Church.
Peace,
Deacon Richard