Immune defense and biological responses induced by toxics in Annelida

摘要: The phylum Annelida comprises primitive coelomates that possess specially developed cellular immunity against pathogens. Active phagocytosis by coelomocytes occurs in the struggle bacteria Polychaeta and Oligochaeta. Encapsulation plays an important role defense parasites, experimental studies have demonstrated cooperation between different coelomocyte populations this process. Spontaneous cytotoxicity of xenogenic or allogenic cells is analogous with vertebrate natural killer cells. Graft rejection a model for studying activity these Accelerated following multiple transplantation reveals immune system has short-term memory. In humoral immunity, agglutinins aggregate foreign material their level enhanced antigens; Annelida, however, no specificity to antibodies been revealed, except weak some antigen-binding proteins. Hemolyti...