[1] Ohio State Univ, Ctr Retrovirus Res, Columbus, OH 43210 USA
[2] Ohio State Univ, Dept Vet Biosci, Columbus, OH 43210 USA
[3] Ohio State Univ, Coll Med & Publ Hlth, Dept Internal Med, Columbus, OH 43210 USA
[4] Ohio State Univ, Arthur G James Canc Res Hosp & Solove Res Inst, Ctr Comprehens Canc, Columbus, OH 43210 USA
[5] Oklahoma Med Res Fdn, Immunobiol & Canc Res Program, Oklahoma City, OK 73104 USA