vitamina B12, acido folico, vitamina C, digestione, met File:1GZX_Haemoglobin.png licensed with Cc-by-sa-3.0-migrated, Cc-by-sa-3.0-migrated-with-disclaimers...
English Structure of haemoglobin Spanish Estructura tridimensional de la hemoglobina, una proteína globular German Räumliche Struktur des Hämoglobins Russian...