These animals do not have a bony skeleton. All insects are invertebrates. They do have a skeleton but it is on the outside of their bodies and is not made of bone. These two main groups have been divided into smaller groups.
The white blood cell (WBC) count indicates the number of white blood cells in a sample of blood. This count provides a clue to the presence of illness.White blood cells are made in the bone marrow and protect the body against infection and aid in the immune response.his count provides a clue to the presence of illness. White blood cells are made in the bone marrow and protect the body against infection and aid in the immune response.
A normal white blood cell count should be between 4,000 and 11,000 leukocytes, any amount lower than that margin indicates a decline that needs to be addressed. The first step is to determine why the white blood cell count is low, a bacterial infection, a virus or conditions such as anaemia are often responsible, but there are other conditions that can lead to this condition. In our article what are the causes of a low white blood cell count you can discover all the diseases that lead to this condition.