In an ablated animal, If Myeloid Stem Cells are injected, which type of cells are induced after the incubation period?
## Core Concept
The question pertains to the role of myeloid stem cells in hematopoiesis. Myeloid stem cells are a type of hematopoietic stem cell that gives rise to all myeloid cells, including monocytes, macrophages, neutrophils, basophils, eosinophils, erythrocytes, dendritic cells, and platelets.
## Why the Correct Answer is Right
When myeloid stem cells are injected into an ablated animal (an animal with a significantly compromised or eliminated immune system or specific cell lineage), these stem cells have the capacity to differentiate into multiple myeloid cell lineages. This process is crucial for repopulating the myeloid cell compartment. The correct answer, , indicates that both myeloid and erythroid cells are induced. This is accurate because myeloid stem cells are bipotential, meaning they can give rise to both myeloid cells (like neutrophils, monocytes) and erythroid cells (like red blood cells).
## Why Each Wrong Option is Incorrect
- **Option A:** - This option is incorrect because it suggests only erythroid cells are produced, which underrepresents the potential of myeloid stem cells.
- **Option B:** - This option is incorrect because it implies only myeloid cells are produced, neglecting the ability of myeloid stem cells to also give rise to erythroid cells.
- **Option D:** - This option is incorrect because it suggests lymphoid cells are produced, which is not a lineage derived from myeloid stem cells. Lymphoid cells originate from lymphoid stem cells.
## Clinical Pearl / High-Yield Fact
A key point to remember is that hematopoietic stem cells can be divided into two main lineages: myeloid and lymphoid. Myeloid stem cells give rise to all non-lymphoid white blood cells, red blood cells, and platelets, making them crucial for repopulating these cell lines in cases of bone marrow failure or ablation.
**Correct Answer: .**