it would therefore appear that in the ordinary cages both routes are open for infection but the relatively larger doses of tubercle bacilli ingested determine a disease of enteric origin and hence of a chronic nature , suppressing at the same time the engrafting of the disease by way of the lungs , and that in the special cages where the alimentary sources of infection have been reduced to a minimum , the disease is engrafted by way of the lungs and is therefore of more acute type .
C0009450
infection
C0012634
disease