**Core Concept:** Myeloid series cells are a group of cells in the hematopoietic system that develop into various types of white blood cells. When these cells are injected into an ablated animal, they are expected to differentiate and multiply, replacing the missing cells in the animal's system.

**Why the Correct Answer is Right:**

After injecting myeloid series cells into an ablated animal, they will differentiate and multiply, leading to the production of various types of white blood cells. In this case, the correct answer is **D**.

In an ablated animal, the absence of mature blood cells due to destruction or depletion leads to the recruitment of hematopoietic stem cells (HSCs) from bone marrow to peripheral blood. These HSCs then undergo clonal expansion and differentiation into various types of white blood cells (neutrophils, lymphocytes, monocytes, and eosinophils) and red blood cells. This process is a crucial aspect of hematopoiesis, the process of blood cell production.

**Why Each Wrong Option is Incorrect:**

A. This option is incorrect because it does not address the differentiation and multiplication of myeloid series cells in an ablated animal.
B. This option is incorrect as it fails to explain the process of hematopoiesis and the role of HSCs in restoring blood cell production in an ablated animal.
C. This option is incorrect as it does not address the specific differentiation and multiplication of myeloid series cells in response to the ablation.
D. As explained above, this option is correct as it highlights the differentiation and multiplication of myeloid series cells after incubation period in an ablated animal, restoring blood cell production.

**Clinical Pearl:** Ablation of animal models is a common experimental technique in biomedical research involving the destruction or depletion of cells to study the response of the animal's hematopoietic system. This technique is utilized to observe the regeneration and restoration of blood cells, such as in myeloid series cells, which are crucial for the immune response, inflammation, and tissue repair. Understanding these processes is vital for medical students and practicing physicians alike, as well as for researchers studying hematopoiesis and its implications in various diseases and treatments.