Ancient reptilian carnivores that resembled modern crocodiles were fearsome hunters, but their scaly armor and sharp teeth couldn’t protect them from parasites, scientists have discovered.

Nature of parasitism -- Types of marine parasites -- Variety of hosts of marine parasites -- Parasites of parasites -- General adaptations of parasitic animals -- Host-parasite interactions -- ...

Why do parasites cause loss of appetite? Scientists have identified a gut-to-brain signaling pathway involving tuft cells and ...