What are antigens and antibodies? How are they involved in the body's response to
incompatible blood?

An antigen is a toxin or other foreign substance which induces an immune response in the body, especially the production of antibodies.

An antibody, also known as an immunoglobulin, is a large, Y-shaped protein produced mainly by plasma cells that is used by the immune system to neutralize pathogens such as pathogenic bacteria and viruses.

Explanation:

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the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.

some scientists like gregory adcock agree with thorne's theory of regional continuity.

others, like chris stringer and ian tattersall, believe thorne's results may be contaminated or misinterpreted.