Figure 2

Principle component analysis of the 55 biological samples of the known set using the nine spots features best able to discriminate between control and infected samples. Five samples are misclassified using this classifier producing one false positive and four false negatives. The arrows indicate the misclassified samples and the table provides their identity. The only similarity between the misclassified samples is that they are relatively early in the disease course. (PC1 = 48.8, PC2 = 20.6)