Particles on AdS4/7 and primary operators on M2/5 brane worldvolumes

I identify a correspondence between the various spherical harmonic modes of massless 11 dimensional fields propagating on the AdS(4/7) in an AdS(4/7) x S-7/4 compactification of M theory, and the corresponding operators, primary under the conformal group, on the world volume of the M-2, M-5 branes. This is achieved by matching representations of the superconformal algebra on the two sides of the correspondence.