. . "(biochemistry) a class of hemoprotein whose principal biological function is electron transfer (especially in cellular respiration)"@en-us . "cytochrome"@en-us . "0"^^ . "115025571"^^ . . "cytochrome"^^ . "114173202"@en-us . . . "0"^^ . . . "(biochemistry) a class of hemoprotein whose principal biological function is electron transfer (especially in cellular respiration)"@en-us . . . "15025571-n"^^ . .