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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.
(also called a glacial age) a long period of low temperature on Earth, during which large sheets...
the tough connective tissue membrane surrounding bones on the outside. It contains nerves and...
reproductive or sex cells that contain the haploid set of chromosomes. The male gametes are...