The potential of plant cells to produce functional recombinantantibodies has been demonstrated in a number of different plant systems. Wepresent a comparative study of a well-defined target protein, a single chain Fvantibody, in different transgenic crop species and cultured tissues. The effectof different regulatory elements and signals for subcellular targeting areconsidered. Practical considerations for the choice of a particular cropsystem,such as yield, storage, distribution and containment properties are discussed.
