Changes

====Types====

====Types====

<p> There are three types of haemoglobin: embryonic, fetal and adult. Embryonic is present in the early stages of fetal development. Fetal haemoglobin has a higher affinity for oxygen than adult haemoglobin and is replaced by adult haemoglobin shortly after birth. Dogs do not have fetal or embryonic haemoglobin. Horses do not have embryonic haemoglobin and their fetal haemoglobin is structurally identical to adult haemoglobin and as such some would say that there is no fetal haemoglobin. Pig (and horse) fetal haemoglobin has the same affinity for oxygen as their adult haemoglobin.</p>

<p> There are three types of haemoglobin: embryonic, foetal and adult. Embryonic is present in the early stages of foetal development. Foetal haemoglobin has a higher affinity for oxygen than adult haemoglobin and is replaced by adult haemoglobin shortly after birth. Dogs do not have foetal or embryonic haemoglobin. Horses do not have embryonic haemoglobin and their foetal haemoglobin is structurally identical to adult haemoglobin and as such some would say that there is no foetal haemoglobin. Pig (and horse) foetal haemoglobin has the same affinity for oxygen as their adult haemoglobin.</p>

====Figures====

====Figures====