0 a substance that causes the body's immune system (= the system for fighting infections) to react, especially by producing antibodies (= proteins that attack harmful bacteria, viruses, etc.)
1 a harmful substance that causes the body to produce antibodies (= substances that fight disease)
I shall not discuss the antigen or its method of administration.
Injections must be made and the antigen must go into the plants, not in single doses, if you please, but by the thousands.
Immunoblot analysis has revealed striking specificity of antigen components in the 3 sandfly species studied.
Liposomes are lipid membrane particles that serve as vehicles or delivery systems for vaccine antigens.
Subsequent experiments were performed using standard methods plus antigen recovery because this enhances the quality of the immunolabelling.
Determining the paternal antigen status through a peripheral blood assay is an important step, which should be undertaken early in the pregnancy.
To some extent, the difference between the types of antigen used makes a fair comparison between results difficult.
Potentially harmful antibodies directed at fetal antigens are thereby 'mopped up'.
