Production of ngf in plant .

The invention relates to genetically modified plants capable of producing a human recombinant protein Nerve Growth Factor, either in the form of pre-pro-protein or in the mature form and parts and differentiated and undifferentiated tissues thereof. The invention relates, also, to methods for the transformation of said plants in a transient way and methods for the transformation of said plants and tissues in a stable or transient way, methods for the recombinant protein purification from crude extract of proteins derived from plant tissue of said plants.