Changes

{{citation

*{{citation|initiallast = Janeway|initialfirst = C.A|2last = Travers|2first = P|3last = Walport|3first = M|finallast = Shlomchik|finalfirst = M.J|year = 2005|title = Immunobiology: The immune system in health and disease|ed = 6th|city = New York|pub = Garland Science Publishing}}

|initiallast = Tizard

*{{citation|initiallast = McGeady|initialfirst = T.A|2last = Quinn|2first = P.J|3last = FitzPatrick|3first = E.S|finallast = Ryan|finalfirst = M.T|year = 2006|title = Veterinary Embryology|city = Oxford|pub =Blackwell Publishing}}

|initialfirst = I

*{{citation |initiallast = Ross|initialfirst = M.H|finallast = Pawlina|finalfirst = W|year = 2006|title = Histology: A text and atlas|ed = 5th ed|city = Baltimore|pub = Lippincott Williams & Wilkins|range = }}

|year = 2004

*{{citation|initiallast = Sjaastad|initialfirst = O.V|2last = Hove|2first = K|finallast = Sand|finalfirst = O|year = 2004|title = Physiology of Domestic Animals|city = Oslo|pub = Scandinavian Veterinary Press}}

|title = Veterinary Immunology: An Introduction

*{{citation|initiallast = Tizard|initialfirst = I.R|year = 2004|title = Veterinary Immunology: An Introduction|ed = 7th ed.|city = Philadelphia|pub = Saunders}}

|ed = 7th ed.

|city = Philadelphia

|pub = Saunders

}}