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Entanglement of indistinguishable particles Ep shared between two separated parties is introduced. Definition of Ep is operationally based in that Ep quantifies the amount of entanglement that can be transferred to another system using local operations (LO), and thus it quantifies the amount of entanglement that can be used as a resource. Pure states |ψAB> for the particles shared between two parties, Alice and Bob are considered. For genuine particles (such as electrons or hydrogen atoms), as opposed to gauge bosons (such as photons), there is a conservation law that rules out the creation of superpositions of different number eigenstates. Thus, it is assumed that the state |ψAB> of the indistinguishable particles contains exactly N particles.