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limbs –n. referring to arms and or legs
regenerate –v. to regrow after being lost or damaged
translucent –adj. permitting light to pass through
counterpart –n. something that does the same job as something else
mechanism a process or system that is used to produce a particular result
extracellular matrix substance produced by cells and released into the environment in which the cells are embedded; In biology, the extracellular matrix (ECM) is a collection of extracellular molecules released by cells that provides structural and biochemical support to the surrounding cells.
room and board –idiom a place to stay and food to eat
potent –adj. active, strong
matrix –n. something from which something else develops
indicate –v. to show
role –n. the part something plays in a system
