Dopamine and opioid systems interact within the nucleus accumbens to maintain monogamous pair bonds oleh Shanna L Resendez, Piper C Keyes, Jeremy J Day, Caely Hambro, Curtis J Austin, Francis K Maina, Lori N Eidson, Kirsten A Porter-Stransky, Natalie Nevárez, J William McLean, Morgan A Kuhnmuench, Anne Z Murphy, Tiffany A Mathews, Brandon J Aragona