These 96-well plates are pre-configured with the most appropriate TaqMan® Gene Expression Assays for a specific biological process, pathway, or disease state. Each plate contains predefined assays and endogenous controls dried-down in the wells, ready for accurate assessment of an entire gene signature in one simple experiment. The panel of assays in the TaqMan® Array 96-well Rat Phosphodiesterase targets genes from five families: 1) Cyclic Nucleotide Phosphodiesterases; 2) Nucleotide pyrophosphatase⁄phosphodiesterases; 3) Acid sphingomyelinases; 4) Neutral membrane sphingomyelin phosphodiesterases, and 5) Glycerophosphodiester phosphodiesterases.