Which of the following is NOT a product of myeloid stem cells?

Myeloid stem cells are a type of stem cell found in the bone marrow that give rise to various blood cells, particularly those that are part of the myeloid lineage. Among their derivatives are monoblasts, which develop into monocytes; erythroblasts, which develop into red blood cells; and megakaryoblasts, which mature into megakaryocytes responsible for producing platelets.

Lymphocytes, on the other hand, arise from a different lineage known as the lymphoid lineage. They are produced from lymphoid stem cells, not myeloid stem cells. This distinction is crucial in understanding the differentiation pathways of blood cells. Therefore, the correct answer highlights that lymphocytes are not a product of myeloid stem cells, as their development stems from a fundamentally different cell lineage within the hematopoietic system. This emphasizes the division between myeloid and lymphoid stem cells and their respective roles in the immune system and blood formation.