Figure 2From: Early indicators of exposure to biological threat agents using host gene profiles in peripheral blood mononuclear cellsPCA relational analysis to show how the gene profiles (various exposure times) cluster for each toxin (a) and the relationship among the various pathogens (b). Human PBMC were exposed to each of these pathogenic agents for at least 3 appropriate time periods. RNA was isolated, and the reverse transcript hybridized to cDNA arrays.Back to article page