The human has developed a variety of immunologic defense for bearing with many different characteristics of bacteria. This defence mechanisms were provided by natural immunity, spesific immunity or both. Two types of pathogenic microorganisms illustrates the main feature of immunity to microbes: extracellular bacteria and intracellular bacteria. Extracellular bacteria such as staphylococcus, St…
Investigations showed that vitamin A deficiency clearly reduced host resistance against various infections. On the other hand, some infections like measles reduced serum vitamin A levels. In a previous study, we have demonstrated that vitamin A administration increased specific titers in rats serum, immunized against sheep red blood cells. In this paper, we report the influence of vitamin A adm…
We have reported previously that injection of vitamin A could increases the blood antibody titers in rats immunized with sheep red blood cells (SRBC). Moreover, the titres remained at a high level during the period 8 weeks of observation. In the following study, we have observed the effect of oral administration of vitamin A on antibody formation in rats immunized with SRBC. A number of male Wi…