[1] Univ Manitoba, Manitoba Inst Cell Biol, CancerCare Manitoba, Winnipeg, MB R3E 0V9, Canada
[2] Univ Fed Sao Paulo, Dept Microbiol Imunol & Parasitol, Disciplina Imunol, BR-04023062 Sao Paulo, Brazil
[3] Univ Parma, Dipartimento Med Sperimentale, Sez Biochim Biochim Clin & Biochim Esercizo Fis, I-43100 Parma, Italy