The hematopoietic stem cell has the ability to develop into which of the following cell types?
1. Macrophage.    2. Red Blood Cell.        3. Neutrophil.               4. B Cell.              5. Dendritic cell.

• A. 2 & 4.
• B. 1, 2, & 5.
• C. 1, 3, 4, & 5.
• D. 1, 2, 3, 4, & 5.

Answer: (D)

Verified step by step guidance

1. Understand the concept of hematopoietic stem cells: These are multipotent stem cells that give rise to all the blood cell types, including myeloid (e.g., macrophages, neutrophils, red blood cells) and lymphoid lineages (e.g., B cells, T cells).
2. Identify the cell types listed in the problem: Macrophage, Red Blood Cell, Neutrophil, B Cell, and Dendritic cell.
3. Determine which of these cell types can be derived from hematopoietic stem cells: All the listed cell types (Macrophage, Red Blood Cell, Neutrophil, B Cell, and Dendritic cell) originate from hematopoietic stem cells.
4. Review the options provided in the problem: Compare the list of cell types derived from hematopoietic stem cells with the options given.
5. Conclude that the correct answer includes all the cell types listed (1, 2, 3, 4, & 5), as they all can develop from hematopoietic stem cells.