Changes

Eosinophils are a similar size to [[Neutrophils|neutrophils]], have a bilobed nucleus and are characterised by the large eosinophilic granules present in their cytoplasm. Produced in the [[Bone Marrow - Anatomy & Physiology|bone marrow]] they migrate into circulation briefly before moving into tissue where they survive for around six hours. The proportion of eosinophils circulating depends on the state of the animal. Normally numbers are very low but will rise considerably during a parasitic infection or allergic reaction.  

Eosinophils are a similar size to [[Neutrophils|neutrophils]], have a bilobed nucleus and are characterised by the large eosinophilic granules present in their cytoplasm. Produced in the [[Bone Marrow - Anatomy & Physiology|bone marrow]] they migrate into circulation briefly before moving into tissue where they survive for around six hours. The proportion of eosinophils circulating depends on the state of the animal. Normally numbers are very low but will rise considerably during a parasitic infection or allergic reaction.  

Eosinophils are mainly located in connective tissue associated with routes into the animal i.e. the respiratory, alimentary, and urogential systems. They play key roles in reacting to [[Parasites|parasites]] and allergens but have limited phagocytic ability and therefore play no role in bacterial infections.

Eosinophils are mainly located in connective tissue associated with routes into the animal i.e. the respiratory, alimentary, and urogenital systems. They play key roles in reacting to [[Parasites|parasites]] and allergens but have limited phagocytic ability and therefore play no role in bacterial infections.

== Development ==

== Development ==