Vaccination is a technique to

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Q: 26 (SCRA/2010)
Vaccination is a technique to

question_subject: 

Science

question_exam: 

SCRA

stats: 

0,62,6,4,62,0,2

keywords: 

{'vaccination': [1, 0, 2, 1], 'immunity': [0, 0, 2, 4], 'infector': [0, 0, 1, 0], 'technique': [0, 2, 3, 2], 'infected area': [0, 0, 1, 0], 'body': [27, 3, 23, 37]}

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