Immature red blood cells vs lymphocytes
When a bird has a strong red blood cell regeneration in the peripheral blood, which white blood cell line may be difficult to distinguish from the immature red blood cells?
The lymphocyte. The immature red blood cells may vary in size, with a round central nucleus, high nucleus to cytoplasm ratio, and is deeply basophilic. The lymphocyte is a small cell with a round to slightly indented nucleus centrally or eccentrically placed, and scant cytoplasm that is weakly basophilic.