What is the correct order in bacterial antigen

processing and presentation?
1. lysosomal enzymes digest the bacterium into
molecular bits
2. the antigen-MHC complex is displayed on
the cell surface
3. the endocytic vesicle fuses with a lysosome
4. a bacterium is engulfed by a phagocytic cell



a. 4-3-1-2
b. 4-3-2-1
c. 3-4-2-1
d. 3-4-2-1
e. 2-4-3-1


A

Biology & Microbiology

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