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Human immunoglobulin (Ig) preparations were tested for their inhibitory effect on Fc rosette formation between anti-D-coated human erythrocytes and lymphocytes, as compared to their complement activating capacity. Both of the two biological activities ascribed to the sites in the Fc portion of the IgG molecules were found to be reduced in the pepsin-treated, as well as in the S-sulfonated Ig preparations, as compared to the activities of the normal human Ig preparation. In the plasmin-treated Ig preparation, which was found to be composed of three major components: plasmin-Fab, plasmin-Fc and plasmin-resistant IgG, the activity of inhibiting the Fc rosette formation was well retained, in contrast to its low complement activating capacity.
H Ishiyama, and
K Okuyama, and
K Masuda, and
J Yasuda
January 1973,
Allergie und Immunologie,
H Ishiyama, and
K Okuyama, and
K Masuda, and
J Yasuda
December 1989,
Immunology letters,
H Ishiyama, and
K Okuyama, and
K Masuda, and
J Yasuda
April 1976,
The Journal of clinical investigation,
H Ishiyama, and
K Okuyama, and
K Masuda, and
J Yasuda
January 1971,
Acta pathologica et microbiologica Scandinavica. Section B: Microbiology and immunology,
H Ishiyama, and
K Okuyama, and
K Masuda, and
J Yasuda
September 1974,
Clinical immunology and immunopathology,
H Ishiyama, and
K Okuyama, and
K Masuda, and
J Yasuda
January 1981,
International archives of allergy and applied immunology,
H Ishiyama, and
K Okuyama, and
K Masuda, and
J Yasuda
October 1975,
Clinical and experimental immunology,
H Ishiyama, and
K Okuyama, and
K Masuda, and
J Yasuda
January 1977,
Rivista di emoterapia ed immunoematologia,
H Ishiyama, and
K Okuyama, and
K Masuda, and
J Yasuda
January 1970,
International archives of allergy and applied immunology,
H Ishiyama, and
K Okuyama, and
K Masuda, and
J Yasuda
January 1979,
International archives of allergy and applied immunology,
