there is no such things called white blood cells
No. There are far more red blood cells than there are white blood cells.
in any given mm3 of blood, what is the approximate ratio of the number of red blood cells (erythrocytes) to white blood cells (leukocytes)
Leukemia is an increase in the number of abnormal white blood cells in the bloodstream. These abnormal cells do not function properly and can crowd out normal white blood cells, leading to a weakened immune system.
The number of white blood cells typically increases when you have an infection or disease. This is because white blood cells are a critical part of the immune system's response to pathogens, such as viruses or bacteria. The increase in white blood cells helps the body fight off the infection.
In 1cm3 of blood, there are 5,000,000,000 red blood cells and 8,000,000 white blood cells. Meaning a ratio of 5000 to 8.
white blood cells only fight disease so your theory is probably incorrect about it increasing
White blood cells generally increases during infections.
The white blood cells
Red blood cells contain hemoglobin, but white blood cells do not
There are about a thousand times as many red blood cells as white cells. Consider that the red blood cells (or erythrocytes) in a mm3 (or microliter) of blood number about five million in an average man (a few less in a woman). The white blood cells (or leukocytes) number only 5-6 thousand per mm3 so the ratio is about a thousand fold.
White blood cells can be counted by a lab technician, usually a haematologist. When a blood sample is taken the number of white blood cells can be counted and if increased or decreased from the norm this will help in a diagnosis being made.
The absolute number of white blood cells in a differential count refers to the actual count of each type of white blood cell present in a microliter of blood. This count helps determine if there are any abnormalities in the distribution of white blood cells.