jamalchris7266 jamalchris7266

27-12-2022
Biology

contestada

Blood islands are ________.
a. clusters of blood-filtering cells in the placenta
b. masses of pluripotent stem cells scattered
throughout the fetal bone marrow
c. vascular tubes that give rise to the embryonic
tubular heart
d. masses of developing blood vessels and formed
elements scattered throughout the embryonic disc

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