Sibel Silici, Professor of Agricultural Biotechnology, Erciyas University (ERÜ), who has been working on propolis for 27 years in Kayseri and has won many international awards for his studies, published her works as a book. Professor Dr. Sibel Silici said that other bee products, especially propolis, have immune system regulating and stimulating effects. Not improving immune system but regulating... Stating that bee products provide protection against both bacterial and viral infections with this aspect. Dr. Silici said, "The immune system means immunity in medical language, the foreign body and microorganisms that enter our body from all the mechanisms. It is an immune system that we will strengthen with factors such as acquired immunity, healthy nutrition, sports, quality sleep." Emphasizing that propolis has a stimulating and regulatory effect on the immune system, Dr. Silici noted, "It is wrong to say that it increases the immune system because sometimes t...