Most pathogens, especially the food/water/air-borne germs, would have to interact with the mucosal barrier system in order to invade hosts. Intracellular pathogens such as microsporidia, Mycobacterium ...
You will be redirected to our submission process. Apicomplexan parasites are obligate intracellular protozoans that can cause severe human and animal diseases, such as malaria, toxoplasmosis, ...