For an example of cells that lose their function, consider the cells in the tail of the tadpole, which become superfluous when the animal develops into a frog .
(cells; lose; their function) (the cells in the tail of the tadpole; become; superfluous; T:when the animal develops into a frog) (the animal; develops; into a frog)
cells the cells in the tail of the tadpole the animal
lose become develops
their function
superfluous T:when the animal develops into a frog
into a frog