GROWTH OF BACTERIA IN THE ANIMAL BODY 55 



O. GROWTH OF BACTERIA IN THE ANIMAL BODY. 



The vast majority of bacteria do not grow in the tissues of the body, 

 although a small number of organisms, the parasitic bacteria, live 

 habitually on the surface of the body or on mucous membranes, usually 

 without producing noticeable effects. A small, formidable group of 

 bacteria, the progressively pathogenic bacteria, actually invade the 

 tissues; they may produce within the host inhibition of function or 

 anatomical changes incompatible with health. 



