FIG. 2. Gene expression profiles in gill tissue from control and heat shocked Gillichthysmirabilis. Each row represents a single cDNA clone and each column represents a timepoint in the heat shock exposure. Genes depicted are those that were up- or downregulated at least twofold compared to the averaged values of the three control timepoints. Genes are clustered by cellular process, according to their gene ontology (GO) classification. Clustered processes are: (1) protein rescue and folding, (2) protein degradation, (3) protein synthesis, (4) proteolysis, (5) cell signaling, (6) cell proliferationand growth, (7) transcriptional regulation, (8) cytoskeletal structure and reorganization,(9) cell-cell or cell-matrix adhesion, (10) carbohydrate metabolism, (11) fatty acidmetabolism, (12) transport, (13) apoptosis and (14) other functions. For clarity, only two rows are dedicated to genes represented by two spots on the array. C, control; HS, heat shock, R; recovery.