This work presents the results of determining the effect of eukaryotic microorganism-based activator on the synthesis of pro-inflammatory cytokines (TNF-? IL-1? IL-6 IL-8) and the expression of cell adhesion markers (CD162 CD177) and cell activation markers (CD69 CD281 CD282 CD286) on the surface of neutrophils. The book will be useful for both researchers and practitioners of immunology and microbiology.