children but also occurs in adults. the condition is not well understood, but food allergy may play a significant role. [ ] the treatment may consist of removal of known or suspected triggers and medication to suppress the immune response. in severe cases, it may be necessary to enlarge the esophagus...
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of only two major animal groups that have adapted to life in dry environments; the other is amniotes , whose living members are reptiles, birds and mammals. [ ] one arthropod sub-group, insects , is the most species-rich member of all ecological guilds in land and freshwater environments. [ ] the lightest...
of only two major animal groups that have adapted to life in dry environments; the other is amniotes , whose living members are reptiles, birds and mammals. [ ] one arthropod sub-group, insects , is the most species-rich member of all ecological guilds in land and freshwater environments. [ ] the lightest...
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