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Because red blood cells have no means of leaving the blood vessels. They are too large to fit through the openings of fenestrated capillaries, and have no other method of extravasation either (unlike white blood cells). Even though white blood cells are larger, the are capable of changing their shape to fit through the tiniest of openings, and can also move on their own. Red blood cells are merely swept along with the current.
Wiki User
∙ 15y ago
Wiki User
∙ 12y agoHaemoglobin was developed over the years that mammals arose and evidently it was only necessary in blood. If it had been necessary in tissue fluid it would have developed there as well - natural selection would have ensured that. If you think about it, haemoglobin, being the carrier of oxygen in the blood, is not necessary in fluids that don't circulate.
Wiki User
∙ 11y agoThe lymph does not contain red blood cells because the red blood cells are kept in the cardiovascular system. Lymph is created by the filtering of extracellular fluid from body tissues, where there are not supposed to be any red blood cells.
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Body fluid containing white blood cells?
lymph
What glands produce white blood cells?
The thymus gland produces white blood cells.
Lymph node that contain t cells and b cells?
T-cells and B-cells are both initially made in the bone marrow. T-cells mature in the thymus. They both freely float around in all lymph nodes and the various lymph organs (e.g., tonsils, spleen...).
Fluid and the small particles it contains that leaves blood cells?
Lymph
Which part of your body generates white blood cells?
Does a lymph contain white blood cells?
yes
Lymph nodes contain large numbers of white blood cells called?
B Cells and macrophages
What does Lymph contain a type of white blood cells?
Yes, lymph contains white blood cells, as well as salts, water, and large molecules
Do lymph node cells contain neutrophils?
no
Does the spleen contain erythrocytes?
The aged red cells self destruct in the spleen , where they squeeze through the red pulp of the spleen. When the spleen is removed, the number of abnormal red cells and old cells circulating in the blood increases considerably.
Where does lymph come from?
Lymph comes from the interstitial fluids spaces in blood where interstitial fluid is found. Lymph is composed mainly of white blood cells.
What type of blood cells are lymphatic?
Lymph nodes are packed full of white blood cells, usually lymphocytes.
What happens inside a lymph node?
if bacteria enter a wound and are not ingested by the white cells of the blood or lymph,they will be carried in the lymph to a lymph node and white cells there will ingest them
What happens inside lymph nodes?
if bacteria enter a wound and are not ingested by the white cells of the blood or lymph,they will be carried in the lymph to a lymph node and white cells there will ingest them
What is a normal component of lymph?
red blood cells
What does the lymph system do?
Produces white blood cells.
Body fluid containing white blood cells?
lymph
