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the blood circuit from the heart to the body and back to the heart.
drugs that are used to treat infections caused by bacteria. Many antibiotics are produced by...
the widespread and rapid extinction of species in the present age due to negative human impact...
all the chemical reactions involved in maintaining the living state of the cells and the...
structure within the cell cytoplasm that is surrounded by its own membrane and has a specific...
a non-membrane bound structure made of proteins and nucleic acids that occurs within the nucleus...