SYMBIOSIS 29 



can be better described as an armed truce. This state of affairs is also 

 encountered in the various commensal and symbiotic relationships 

 between vertebrate hosts and bacteria and Protozoa. As we have seen, 

 the host frequently tolerates the presence of commensals. Tolerance 

 in the opinion of Goodrich, is merely a stage between immunity 

 and disease. Symbiosis, Bernard has declared, is the frontier of 

 disease. 



