"0"^^ . "heme"^^ . . . "haem"@en-us . "15024997-n"^^ . . . "114172646"@en-us . "a complex red organic pigment containing iron and other atoms to which oxygen binds"@en-us . . . . . . "protoheme"@en-us . . . "110783771"@en-us . . . "0"^^ . . . "115024997"^^ . . "hematin"@en-us . "heme"@en-us . "haemitin"@en-us . .