The primary lymphoid organs:
I: include spleen and lymph nodes
II: are the organs where immature lymphocytes differentiate into antigen-sensitive lymphocytes.
 
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic:  Human Immune System |
 64%
Level 2: 60%+
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Identify the incorrect statement 

1. Acquired immune response is a highly specific immune response 
2. Acquired immune response is due to lymphocytes 
3. Acquired immune system cannot differentiate between self and non-self antigens 
4. Acquired immunity is characterized by development of memory 
Subtopic:  Human Immune System |
 85%
Level 1: 80%+
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