CLINICAL BIOCHEMISTRY, vol. 31, no. 3, page. 137 - 141, 1998-04
JOURNAL OF IMMUNOLOGY, vol. 158, no. 4, page. 1895 - 1901, 1997-02-15
JOURNAL OF BIOLOGICAL CHEMISTRY, vol. 271, no. 14, page. 8170 - 8175, 1996-04-05