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the parts and processes of the body that recognise and fight pathogens, such as viruses and bacteria.
the seepage of acidic, contaminated water from disused mines and mine dumps.
identical strands of a chromosome produced by the doubling of genetic material during cell...
small fluid-filled spaces in the matrix of bone and cartilage in which cartilage and bone cells...
processes used to create copies of DNA fragments (usually genes), cells or organisms to create...