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Class 12BiologyHuman Health and DiseaseGeneral
Easy

The main barrier which prevents the entry of disease-causing organisms into our body is

  • A
    Skin
  • B
    Saliva
  • C
    Lymphocytes
  • D
    Interferons
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Class 12 Questions

Class 12

Biology Questions

Chapter

Human Health and Disease

Subtopic

General

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