Why do white blood cells only have nuclei at birth, while red blood cells always have them?
White blood cells, or leukocytes, are cells of the immune system defending the body against both infectious disease and foreign materials. Several different and diverse types of leukocytes exist, but they are all produced and derived from a multipotent cell in the bone marrow known as a hematopoietic stem cell. Leukocytes are found throughout the body, including the blood and lymphatic system……. AIM HERE: Red blood cells have hemoglobin and carry oxygen. In some animals, such as humans, they do not have nuclei. White blood cells are of several types. Some are lymphocytes, which either produce antibodies to attack invaders (B lymphocytes), or attack transplanted tissue (T-lymphocytes). There are also other white blood cells involved in injury response, such as clotting, or in other immune system actions (self-defense). White blood cells do not have hemoglobin, and do have nuclei. They do not carry oxygen. THEY DONT NEED TO HAVE NUCLEI AND THEIR WORK IS JUST TO PROTECT OUR BODY FROM
