It doesn't need to get inside the body, erythrocytes are produced inside the body by your bone marrow (red) and are made constantly. If however one needed more red blood cells, it would be via a blood transfusion.
its inside our body
Red blood cells do contain some salts and other ions inside the cell. This means that if it is placed in water (assuming that it is deionized and has no solvent in it) the cell will be hypotonic because the concentration inside the cell will be higher than it is outside the cell.
The biggest difference is that a red blood cell has no nucleus where as a white blood cell does. A red blood cell has no nucleus because it needs all the space inside the cell for the haemoglobin which is stored inside it and is the oxygen attrcting chemical. White blood cells can have either a bean shaped nucleus which would make it a lymphocyte or a double lobed nucleus which would make it a phagocyte. Another difference is that white blood cells are bigger than red blood cells.
like a lot of water
The white blood cell has nucleus that red blood cell does not
a red blood cell is red when it reaches oxegen.
You have hemoglobin in red blood cells. They are 'inside' the capillaries.
Hematopoiesis is the process of red blood cell production inside of bones.
RBC (Red Blood Cell) was inside a blood vessel when he died in the anime "Cells at Work!".
red blood cells are a type of cell
its is the red blood cell on our body.
Blood contains red blood cells. Red blood cells don't contain blood. Blood does not enter the red blood cell.