Type II myeloblasts are characterized by which feature?

Type II myeloblasts are distinguished by their specific morphological characteristics, particularly the number of primary granules present. The defining feature of type II myeloblasts is that they typically have fewer than 20 primary granules per cell. This lower granule count reflects their position in the development pathway of myeloid cells, as they are more immature than other myeloid lineages.

In the context of myeloblast classification, the presence of granules is a critical characteristic. Type II myeloblasts exhibit fewer granules than type I myeloblasts, which have a more pronounced granulation. This distinction is vital for pathologists and hematologists when assessing the maturation of myeloid cells during various hematological conditions.

Other characteristics mentioned in different options are not representative of type II myeloblasts. Presence of a folded nucleus is more characteristic of more mature forms, while the basophilic cytoplasm seen in other options indicates a different stage in granulocyte maturation. Understanding these differences helps in accurately classifying myeloblasts during laboratory assessments.