Discussion
In mammals, hematopoietic stem cells that give rise to different types of blood cells are known as
Answer: B
The Commission's answer is pluripotent stem cells.
A single hematopoietic stem cell in the bone marrow can give rise to every blood cell type, red cells, platelets, granulocytes, monocytes and lymphocytes, and many textbooks therefore call it the pluripotent hematopoietic stem cell. (In stricter modern usage, cells limited to one tissue are called multipotent, but that term is not offered.)
Totipotent cells, such as the zygote, can form the whole organism including extra-embryonic tissues. Myeloid and lymphoid progenitors are the more restricted daughters of the stem cell, each giving only one branch of the blood lineages.
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