It may be possible that different responses are observed as a consequence of different types of immunization, while on the other hand, it may be possible that IgT specific plasma cells take over IgM+ cells only at late times post-immunization, since the previous studies in which IgT+ cells accounted for almost all B cells in the midgut segment were performed in response to a parasite three months after the infection [8]. The gene discussed is CD40LG; the disease is infection.