Thymus:

I: is located ventral to the heart/aorta
II: plays a major role in differentiation of T-lymphocytes
III: promotes production of antibodies
IV: enlarges with age

1. Only I, II and III are correct
2. Only I, III and IV are correct
3. Only II, III and IV are correct
4. I, II, III and IV are correct

Subtopic:  Thymus |
 91%
Level 1: 80%+
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