Summary
Fragment I was isolated from rabbit γ-globulin which contained antibodies to Salmonella. On a weight basis the fragment I and γ-globulin were compared as to their ability to promote phagocytosis, protect mice against infection with Salmonella typhimurium, and prepare bacteria for the bactericidal effect of complement. Fragment I retains 1 to 2% of the activity of intact γ-globulin in clearance and protection tests. It retains no activity in the bactericidal test nor in the sensitization of red cells for complement lysis. Although certain components of complement may be involved, the complete system as defined by hemolytic activity or bactericidal activity is not essential either for opsonization of Salmonella or for preparation for in vivo kill.
Footnotes
- Received June 28, 1965.
- Copyright © 1966 by The American Association of Immunologists, Inc.
Pay Per Article - You may access this article (from the computer you are currently using) for 1 day for US$37.50
Regain Access - You can regain access to a recent Pay per Article purchase if your access period has not yet expired.
Log in using your username and password
In this issue
