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Home Q & A Board Science-Related Homework Help Psychology
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killian killian
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10 years ago
Surface fragments on pathogens that cause leukocytes to produce antibodies to destroy them   
      are called ______.   
      a.   antigens                        c.   endocrines   
      b.   lymphocytes                     d.   platelets
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Smiling Face with Open Mouth
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f_zah1f_zah1
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