EUROPEAN JOURNAL OF PHARMACOLOGY, vol. 322, no. 2-3, page. 265 - 273, 1997-03-19
JOURNAL OF BIOLOGICAL CHEMISTRY, vol. 271, no. 51, page. 32753 - 32759, 1996-12-20
VACCINE, vol. 25, no. 34, page. 6359 - 6366, 2007-08-21
BIOCHEMICAL PHARMACOLOGY, vol. 56, no. 5, page. 561 - 567, 1998-09-01