If immature nucleated RBCs are present in the blood of foetus, what disease is it?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the presence of immature nucleated red blood cells (RBCs) in the blood of a fetus.

2. **Identifying the Condition**: The presence of immature nucleated RBCs in the blood of a fetus is indicative of a specific condition. This condition is known as normoblastemia.

3. **Definition of Normoblastemia**: Normoblastemia is defined as having a higher than normal number of nucleated RBCs in the blood. It is particularly concerning when these cells are present beyond the expected age of approximately one week after full-term birth.

...