phosphodiesterase 4D
phosphodiesterase 4D, cAMP-specific (dunce (Drosophila)-homolog phosphodiesterase E3), "phosphodiesterase 4D, cAMP-specific"
phosphodiesterase E3 dunce homolog (Drosophila), "cAMP-specific 3',5'-cyclic phosphodiesterase 4D"