Spearman rank correlation coefficients (rS) based on humoral immune response values, calculated from the species averages
| . | Diphtheria . | . | . | Tetanus . | . | . | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| . | Background . | Primary . | Secondary . | Background . | Primary . | Secondary . | ||||
| Natural antibodies | 0.7 | 0.1 | 0.1 | 0.5 | 0.4 | 0.3 | ||||
| Complement-mediated lysis | 0.3 | 0.1 | 0.4 | 0.4 | 0.1 | 0.7 | ||||
| . | Diphtheria . | . | . | Tetanus . | . | . | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| . | Background . | Primary . | Secondary . | Background . | Primary . | Secondary . | ||||
| Natural antibodies | 0.7 | 0.1 | 0.1 | 0.5 | 0.4 | 0.3 | ||||
| Complement-mediated lysis | 0.3 | 0.1 | 0.4 | 0.4 | 0.1 | 0.7 | ||||
All correlations were positive, but none were significant at the 5%confidence level; when rS>0.7, then 0.05<P<0.1 (N=5).