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DNA molecules replicate to form identical chromatids
Early in the twentieth century, when malnutrition was common, companies such as this one advertised
Differences in the antigen-processing pathways between MHC molecules class I and class II.
Chemical similarities between oxidation and synthesis of a fatty acid
A thimble of water contains 4.0 x 1021 molecules. The number of moles of H2O is:
Cancer cells can move to new locations in the body, a process called metastasis