Changes

They then undergo moults and '''copulate''' in the '''small intestine''' after which the males die and the '''females penetrate''' into the intestinal '''mucosa'''.  

They then undergo moults and '''copulate''' in the '''small intestine''' after which the males die and the '''females penetrate''' into the intestinal '''mucosa'''.  

The females then produce more '''larvae''' which can '''disseminate''' through the host in the blood and lymphatics, localising in the '''striated muscles'''. In pigs and wild boars, preferential sites appear to be the '''diaphragm, masseters and tongue.''' The muscle cells are transformed by the larvae within them, to form '''nurse cells''' which can supply '''nutrition''' and protects the larvae in a '''collagen capsule'''. Larvae can then survive in frozen and decaying carcasses forming an important route of transmission.  

The females then produce more '''larvae''' which can '''disseminate''' through the host in the blood and lymphatics, localising in the '''striated muscles'''. In pigs and wild boars, preferential sites appear to be the '''[[Diaphragm - Anatomy & Physiology|diaphragm]], [[Mastication#Muscles of Mastication|masseters]] and [[Tongue - Anatomy & Physiology|tongue]].''' The muscle cells are transformed by the larvae within them, to form '''nurse cells''' which can supply '''nutrition''' and protects the larvae in a '''collagen capsule'''. Larvae can then survive in frozen and decaying carcasses forming an important route of transmission.  

Humans are infected by eating '''raw or undercooked meat''' containing the infective larvae.  

Humans are infected by eating '''raw or undercooked meat''' containing the infective larvae.