Zinc sulfate and immunologic response to recombinant hepatitis B vaccine Afsharian M et al. 35 12. Argani H, Akhtarishojaie E. Levamizole enhances immune responsiveness to intra-dermal and intra-muscular hepatitis B vaccination in chronic he- modialysis patients. J Immune Based Ther Vaccines. 2006;4:3. 13. Sharifi-Mood B, Izadi S, Salehi M, Qaedi H. Comparison of Immunogenic- ity of Low-Dose Intradermal Hepatitis B Vaccine with the Standard-Dose Intramuscular Vaccination in Young Healthy Iranian Adults. Hepat Mon. 2008;8(2):111-4. 14. Hodkinson CF, Kelly M, Alexander HD, Bradbury I, Robson PJ, Bonham MP, et al. Effect of zinc supplementation on the immune status of healthy older individuals aged 55-70 years: the ZENITH Study. J Gerontol A Biol Sci Med Sci. 2007;62(6):598-608. 15. Migneco G, Tripi S, Navetta A, La Ferla A, Vaccaro F. [Serum zinc concen- tration and antibody response to hepatitis B vaccine in hemodialysis pa- tients]. Minerva Med. 1990;81(1-2):19-21. 16. Kouw PM, Konings CH, de Vries PM, van der Meulen J, Oe PL. Effects of zinc supplementation on zinc status and immunity in haemodialysis pa- tients. J Trace Elem Electrolytes Health Dis. 1991;5(2):115-9. Hepat Mon. 2011;11(1):32-35