1 Cytochromes P450 are a multi-gene superfamily of haem containing enzymes that catalyse the oxidative metabolism of many compounds.

2 Haem iron is more readily absorbed than non-haem iron.

3 Another one is the disassociation of haem by haem oxygenase(HO), The second one is the main path.

4 Haem iron only exists in animal tissues, whilst in plant foods iron is present as non-haem iron.

5 Haem iron is found in animal-derived foods and products, whilst non-haem iron is found in plant foods.

6 Lb has a haem prosthetic group and an apoprotein component of 15600 to 15900 molecular weight.

7 Iron is present in foods as haem and non-haem iron.

8 Two methods of extracting haem from pig blood are introduced.

9 Haem iron is absorbed four to five times more easily than non-haem iron but the absorption of non-haem iron is three times greater when foods containing vitamin C are eaten at the same meal.

10 The HL-01 isolate of canine parvovirus was propagated on F81 cell. And identified by the haem agglutination test(HA) and haem agglutination inhibition test(HI).

11 Myoglobin is a cytoplasmic, single chain polypeptide of 153 acids and contains a single haem group.

12 Non-haem iron is less easily absorbed by the body than is haem iron.