RBCs considered "permanent" cell type?

[StrongIslandDoc]

FA2106 p58: "Cell Types" - Permanent: Neurons, Skeletal M., Cardiac M, RBCs.

Does this sound incorrect to anyone?

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[Brorthopedic]

RBCs cannot divide, remember they don't have nucleus whereas its precursors at bone marrow have that capacity

 

[jqueb29]

They are permanent in that they do not divide. They are different from the others listed because those other 3 cell types are lifelong (i.e. If a cardiac muscle cell dies, it will never be replaced). RBCs live for about 120 days without dividing, then they die and are replaced by a RBC generated from a stem cell.