Workflow of the FARO server. (A) Microarray expression data was extracted and processed in order to acquire (B) response signature compendium (a collection of top ranking differentially expressed genes lists). (C) Query signature is compared to the compendium resulting in a set of possible functional associations. (D) A graph representation of the functional associated factors. Edge thickness indicates the association strength and the coloration represents significant response direction congruence (blue) or dissimilarity (red). Gray edges indicate insignificant directionality.