Numbers of Jerne plaque-forming cells per spleen, serum hemolysin concentrations, and the degree of resistance of the serum hemolysin to degradation by 2-mercaptoethanol have been determined in adult CBA and C3D2F1 mice as functions of time following primary or secondary intravenous sensitization with 4 × 108 sheep erythrocytes. The characteristic secondary response yields fewer PFC and lower serum antibody concentrations than the primary response. When an adequate time interval (9 weeks or more) elapses between primary and secondary antigen injections, the magnitude of the secondary response begins to approach that of the primary. Primary serum hemolysin is mercaptoethanol sensitive (19S immunoglobulin) while secondary serum hemolysin is largely mercaptoethanol resistant (7S immunoglobulin). Generation times of 7 and 9 hr are obtained for plaque-forming cells during the first 4 days of the primary response. A mathematical model is presented which relates numbers of antibody-forming cells to serum hemolysin concentrations. Using the model together with available experimental data, it is concluded that the great majority of the cells producing 7S hemolysin probably are not detected by the Jerne technique, as applied to the spleen.
Antibody plaque-forming cells: kinetics of primary and secondary responses.
Published 1966 in Journal of Immunology
ABSTRACT
PUBLICATION RECORD
- Publication year
1966
- Venue
Journal of Immunology
- Publication date
1966-04-01
- Fields of study
Biology, Medicine
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
CITATION MAP
EXTRACTION MAP
CLAIMS
CONCEPTS
- 19s immunoglobulin
The sedimentation class associated here with the mercaptoethanol-sensitive serum hemolysin fraction.
Aliases: 19S antibody
- 2-mercaptoethanol
A reducing reagent used to test whether serum hemolysin activity is sensitive to reduction.
Aliases: mercaptoethanol, ME
- 7s immunoglobulin
The sedimentation class associated here with the mercaptoethanol-resistant serum hemolysin fraction.
Aliases: 7S antibody
- generation time
The estimated doubling-time interval for plaque-forming cells during the early primary response.
Aliases: cell generation time
- jerne plaque-forming cells
Antibody-forming spleen cells counted by the Jerne plaque assay in the sensitized mice.
Aliases: PFC, plaque-forming cells
- primary response
The immune response measured after the first intravenous sensitization with sheep erythrocytes.
Aliases: primary antibody response
- secondary response
The immune response measured after a subsequent intravenous sensitization with sheep erythrocytes.
Aliases: secondary antibody response
- serum hemolysin
Hemolytic antibody activity measured in the serum after sensitization with sheep erythrocytes.
Aliases: serum antibody, hemolysin
REFERENCES
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