"A vitamin B12 deficiency that is characterized by a lack of vitamin B12 intestinal absorption resulting from a deficiency in the B12 transport protein TCII."^^ . . "2013-12-11T02:48:06Z"^^ . . "disease_ontology"^^ . "lschriml"^^ . "TCN2 deficiency"@en . "DOID:0050818"^^ . . "OMIM:275350"^^ . "transcobalamin II deficiency"^^ .