5. Fill in the gaps with any prepositions and articles. Make up the sentences with any three of them.

1. to be protected_______the harmful microorganisms;

2. to protect_______ establishing barriers;

3. defense______any infection or invasion;

4. maintenance_____ stable environment;

5. to protect____ any intruder;

6. to prepare foreign substances_________ antibody formation;

7. to escape ______ destructive mechanism;

8. the second line_____ defense;

9. _______the site of inflammation;

10. because______increase______ agents;

11.specific response______ foreign cells;

12. to circulate _____ the blood;

13. To meet_____ foreign particle;

14. preparations used______ immunization;

15. in _____ set schedule;

1.________________________________________________________________________

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2.________________________________________________________________________

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3.________________________________________________________________________

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6. Rewrite the sentences using the offered words and word combinations with similar meaning.

provide for, is referred to, is considered, remain, involves, range, develop, in a set schedule

a. Inflammation is thought to be the body’s second line of defense against infection. __________________________________________________________________________

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b. Different parts of immune system stipulate for barriers against the infection._________

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c. Antibodies stay in the blood, providing a long-term immunity._________________________________________________________________

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d. Antibody-based immunity is termed a humoral immunity._______________________

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e. Passive immunity includes a transfer of antibodies to an individual. _________________

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f. The exact effects of such conditions vary from major abnormalities to minor disorders. __________________________________________________________________________

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g. Primary disorders arise from inherited failure of the immune system components to develop. __________________________________________________________________

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h. Vaccinations are given according to an established order during the childhood. __________________________________________________________________________

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