References

 

Hart, CA and Shears, P (2004), Colour Atlas of Medical Microbiology, 2nd ed, Mosby. p. 3

Lakhami, SR; Dilly, SA; Finlayson CJ (1998), Basic Pathology, 2nd ed, London, Arnold. p. 54

Lydyard, P; Whelan, A; Fanger, M (2004), Instant Notes Immunology, 2nd ed, Abingdon, Taylor & Francis. p 17

Playfair, JHL and Lydyard PM (1995), Medical Immunology for Students, London, Churchill Livingstone. p. 6

Rabson, A; Roitt, IM; Delves, PJ (2005), Really Essential Medical Immunology, 2nd ed, Oxford, Blackwell Publishing Ltd. p.13