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IMMUNO AND SERO

In the fourth month of gestation, ___ begins to produce blood cells. After the fifth fetal month, ____ begins to assume its ultimate role as the primary site of hematopoiesis.

Bone marrow

Author

In the fourth month of gestation, _ begins to produce blood cells. After the fifth fetal month, __ begins to assume its ultimate role as the primary site of hematopoiesis.