antigen
molecule capable of inducing an immune response (to produce an antibody) in the host organism
pathogen-associated molecular pattern
pattern of the immune system
T-independent antigens
antigens which may directly stimulate B lymphocytes without the cooperation of T lymphocytes
tumor antigen
antigenic substance produced in tumor cells
anthrax toxin
tripartite protein complex secreted by virulent strains of Bacillus anthracis
heterophile antigens
similar antigens present in different tissues and species