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the fluid that circulates through the lymphatic system. It is similar to blood plasma in composition, but does not contains cells or the large proteins that occur in blood.
a small finger-like blind-ending extension of the mammalian large intestine connected to the...
organisms that feed on dead organic matter and thereby release nutrients back into the soil.
a disease caused by the human immunodeficiency virus (HIV).
an organelle that occurs in the cytoplasm of both plant and animal cells. It is made from stacks...
the digestive tract of an animal, made up of different organs, that extends from the mouth to...