Immunogen sequence: RRHCCSSAEAE TQTCYTSVKQ VSSAEVRIGP MRLTQDPIQV LLIFAKEDSQ SDGFWWACDR AGYRCNIART PESALECFLD Highest antigen sequence identity to the following orthologs - mouse 99%, rat 62%. Cyclic nucleotide phosphodiesterases (PDEs) catalyze hydrolysi