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Practice Reading: Fill in The Blanks (Drag & Drop) ID: #34582 Allergies
Instructions
* Drag the correct answer into all target fields
Allergies  are  abnormal  immune  system  reactions  to  things  that  are  typically  harmless  to  most  people.  When  youre  allergic  to  something,  your  immune  system    believes  that  this  substance  is  harmful  to  your  body.  Substances  that  cause  allergic  reactions    such  as  certain  foods,  dust,  plant  pollen,  or  medicines    are  known  as  allergens.  In  an  attempt  to    the  body,  the  immune  system  produces  IgE    to  that  allergen.  Those  antibodies  then  cause  certain  cells  in  the  body  to    chemicals  into  the  bloodstream,  one  of  which  is  histamine.  The  histamine  then    on  a  person's  eyes,  nose,  throat,  lungs,  skin,  or  gastrointestinal  tract  and  causes  the  symptoms  of  the  allergic  reaction.  Future  exposure  to  that  same  allergen  will  trigger  this  antibody  response  again.  This  means  that  every  time  you  come  into  contact  with  that  allergen,  you'll  have  an  allergic  reaction.  

mistakenly release embody antibodies preserve protect enact acts

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