ANSWER;
protein-rich blood plasma that has left capillaries
Lymph is un reabsorbed interstitial fluid which are trapped in the capillaries called lymph capillaries. it is pale in color(compare to red of the the blood),and continuously flood the body tissues for fluid balance and waste removal.
Macrophages and lymphocytes (WBC) are the principal cellular components,however it also contain proteins,lipids.It is similar to blood plasma,except for higher amounts of lipids but will lesser amount of WBC and platelets.
Its special channels are the lymphatic vessels of the lymphatic system,which are the lymph nodes and vessels.
The functions of Lymph are:
Responsible for the removal of tissues bathing the tissues(Interstitial fluids ) from the tissues.
Transport of fats from the lacteal during absorption.
Transport of WBC across from the L.nodes to the bone.
it also mediates in immune response,through the transport of antigen-presenting cells.
it is similar to blood because it is a circulating fluids,through special vessels,and both linked by network of capillaries.
However, more wbc,rbc,platelets,oxygen are present in blood than the lymph. In addition because it returns proteins,it is said to contain proteins,but in actual sense if lacks protein
