This process, termed apoptosis, or programmed cell death, is essential to normal cell development in the way that loss of the tail is essential in the development of a tadpole into a frog.
(This process, termed apoptosis, or programmed cell death; is; essential to normal cell development) (loss of the tail; is; essential in the development of a tadpole)
This process, termed apoptosis, or programmed cell death loss of the tail
is is
essential to normal cell development
essential in the development of a tadpole