. . . . . . . . . . . . . . . . . . . . . "f264_human"^^ . "PFKFB4"^^ . "6PF-2-K/Fru-2,6-P2ase testis-type isozyme"^^ . . "6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 4"^^ .