100% cross-reactivity with recombinant human (rh) Neuroligin 3 variant 2 and recombinant rat Neuroligin 3 variant 2 and no cross-reactivity with rhNeuroligin 1 variant 2, rhNeuroligin 2, rhNeuroligin 4, recombinant rat Neuroligin 1, 1 variant 2, 2 varian