Anti H. pylori ATCC 43504 and MTCC 41653 were observed in serum from 2nd weeks after first immunization. It reached a highest titre value of 1: 1280 from the 4th week onwards and
continued to be same. However the appearance of specific IgY in egg yolk showed some variation in time.
The appearance of specific IgY started from 4th week after 1st immunization
with H. pylori ATCC 43504 and MTCC 41653 antigens. A highest titre value of 1:1280 was
reached after 6th week after 1st immunization with H. pylori ATCC 43504 and MTCC 41653
antigens respectively.