4 bytes added ,  12:43, 9 January 2009
no edit summary
Line 31: Line 31:  
**egg hatches in intestine → larva penetrates intestinal mucosa → hepatic portal blood → liver → venous blood → heart → lung capillaries → alveoli → ascends trachea → swallowed → small intestine (where the adults develop)
 
**egg hatches in intestine → larva penetrates intestinal mucosa → hepatic portal blood → liver → venous blood → heart → lung capillaries → alveoli → ascends trachea → swallowed → small intestine (where the adults develop)
   −
  NOTE: there are important variations on this theme; for example, the migratory larvae of some species can cross the placenta or enter the mammary glands (examples of vertical transmission); while some species will utilise paratenic or intermediate hosts.
+
  NOTE: there are important variations on this theme; for example, the migratory larvae of some species can cross  
 +
the placenta or enter the mammary glands (examples of vertical transmission); while some species will utilise  
 +
paratenic or intermediate hosts.
     
292

edits