  We give an explicit superspace propagator for the chiral scalar field
strength of 10D IIB supergravity on an AdS5 x S5 background. Because this space
is conformally flat, the propagator is very simple, almost identical to that of
flat space. We also give an explicit expansion over the Kaluza-Klein modes of
S5. The fact that the full propagator is so much simpler suggests that, as in
2D conformal field theory, AdS/CFT calculations would be simpler without a mode
expansion.
