Q. Consider the following statements: 

1. Most antigens are Proteins or lipids
2. Lipids work as antigens if they combine with Proteins or polysaccharides
3. Most vaccines contain antigens. 

Which among the above statements are correct?
Answer: 2 & 3 only
Notes: Please note that most antigens are either proteins or polysaccharides. Lipids are not antigens but they can work as antigens when they combine with proteins and polysaccharides.

This question is part of UPSC Daily 20 MCQ Series Course on GKToday Android app.