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abnormalities in cell structure; for example, cncer cells typically lose the appearance of the parent cells and come to resemble undifferentiated or embyronic cells
growth of an organ or tissue due to an increase in the size of its cells; is a normal response of skeletal muscle cells when they are challenged to excessive weight lifing
hollow, microscopic sacs formed of phospholipids that can be filed with a variety of drugs, serve as multipurpose vehicles for drugs, genetic material, and cosmetics
a change in DNA base sequence leading to incorporation of incorrect amino acids in particular positions in the resulting protein; the affected protein may remain unimpaired or may function abnormally or not at all, leadng to disease
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