Assertion: immune system's cell | /r/AtLocation | the bone marrow
Facets:
Source sentences:
text: After immune cells are produced in the bone marrow, they quickly enter the blood stream.
text: Dendritic cells are produced in bone marrow and migrate through the blood to tissues where they monitor for pathogens.
text: All cells of the immune system are created in the bone marrow from a common type of starting cell, called a stem cell.
text: The immature cells produced at the bone marrow, migrate and come into the thymus, where the maturation process takes place.
text: If an invading organism or particle (i.e. a thorn) do make it past these defenses, cells (produced in the bone marrow) like macrophages and neutrophils are waiting to attack the foreign object.