Which of the following statement(s) is/are incorrect?
A. All cells of the immune system originate in the Bone Marrow
B. Lymphoid progenitor cells originate from a pluripotent stem cell
C. B cells develop in the thymus
D. Eosinophils are highly phagocytic
E. Both (b) and (d)
F. Both (c) and (d)
I suspect the answer is E, but I'm not entirely sure how phagocytic eosinophils are (I think it's pretty low b/c they mainly degranulate)
Reasoning:
A-correct because all immune cells originate from hematopoietic stem cells (HSC) from the bone marrow (BM).
B-wrong bc the HSC only gives rise to blood cells and is not pluripotent
C-Correct, B cells are differentiated in the BM, but mature in the thymus.
D-Wrong??, My lecture notes say that eosinophils are granulocytes (their main function), but google says they also phagocytose, so my conclusion is that they are NOT highly phagocytic.
->>> answer = E?
