The three most important of the antibodies referred to which can be demonstrated with a certain amount of facility are agglutinin, opsonin and bacteriolysin; and the methods of testing for these bodies will now be considered.    From Wordnik.com.  [The Elements of Bacteriological Technique A Laboratory Guide for Medical, Dental, and Technical Students. Second Edition Rewritten and Enlarged.] Reference

It has an anti-infectious action brought about by internal disinfection, but is, in this respect, in contrast to the anti-bacterial disinfectant treatment methods which, for example, can be carried out in laboratory experiments with the aid of the R. Pfeiffer's bacteriolysin; because its activity is only detoxication, we call it antitoxic.    From Wordnik.com.  [Emil von Behring - Nobel Lecture] Reference