For want of a protein.
Finch
C A
CA
D000818:Animals; D005293:Ferritins / Q000378:metabolism; D006801:Humans; D007501:Iron / Q000378:metabolism*; D011990:Receptors, Transferrin / Q000378:metabolism; D014168:Transferrin / Q000172:deficiency* / Q000235:genetics
D011990:Receptors, Transferrin; D014168:Transferrin; D005293:Ferritins; D007501:Iron