- Interleukin 6 production in experimental cerebral malaria: modulation by anticytokine antibodies and possible role in hypergammaglobulinemia. Grau, G.E., Frei, K., Piguet, P.F., Fontana, A., Heremans, H., Billiau, A., Vassalli, P., Lambert, P.H. J. Exp. Med. (1990)