Ozturk F, Park PJ, Tellez J, Colletti E, Eiden MV, Almeida-Porada G, Porada CD. Expression levels of the PiT-2 receptor explain, in part, the gestational age-dependent alterations in transduction efficiency after in utero retroviral-mediated gene transfer. J Gene Med. 2012 Mar; 14(3):169-81.