Column I list the components of body defence and column II lists the corresponding descriptions. Match the two columns and choose the correct option.
Column I (components of body defence) | Column II (Description) | ||
A. | Active natural immunity | I. | Injection of gamma globulins |
B. | First line of defence | II. | Complement proteins and interferons |
C. | Passive natural immunity | III. | Direct contact with the pathogens that have entered inside |
D. | Second line of defence | IV. | Surface barriers |
V. | Antibodies transferred through the placenta |
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