Heart chamber specification is dependent on the loss,gain,or limited expression of several transcription factors.What pattern of expression supports specification and formation of the right ventricle?
A) Loss of expression of Tbx5 within the primary heart field
B) Loss of expression of Irx4 within the cranial portion of the primary heart field
C) Restricted expression of RALDH-2 to the cranial portion of primary heart field
D) Continued expression of Isl1 and Tbx1 within the secondary heart field
Correct Answer:
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