If the factor causing the damage to cells is quickly removed, the cell may be able to recover and return back to its normal state

A. diapedesis: Diapedesis is the passage of leukocytes through capillary walls (emigration), not the directed movement along a chemical gradient.
B. chemotaxis: Chemotaxis is the directed migration of leukocytes toward higher concentrations of chemical signals (chemokines, complement fragments).
C. margination: Margination is the movement of leukocytes to the periphery of blood vessels (rolling/adhesion) prior to emigration.
D. endocytosis: Endocytosis is cellular uptake of material (including phagocytosis for microbes), not directional migration.

A. Atrophy: Atrophy (reduction in cell size and function) is usually reversible if the causative stimulus is removed, though prolonged or severe atrophy may lead to cell loss - generally considered primarily reversible.
B. Hyperplasia: Hyperplasia (increase in cell number) is often reversible when the stimulus ends (e.g., hormonal hyperplasia), although some pathological hyperplasias can persist or predispose to neoplasia.
C. Hypertrophy: Hypertrophy (increase in cell size) is typically reversible with removal of the stimulus (e.g., muscle atrophy after disuse), but long-standing pathologic hypertrophy (e.g., cardiac) can lead to irreversible damage.
D. Metaplasia: Metaplasia is a reversible change in which one adult cell type is replaced by another better suited to a chronic stress; however long-term metaplasia can progress to dysplasia.
E. Dysplasia: Dysplasia describes disordered cellular growth and architecture; it can be reversible if mild and the injurious stimulus is removed, but it can be irreversible if it progresses toward neoplasia - therefore dysplasia is classically described as potentially reversible or irreversible depending on type/severity.