What appears to be the first step in the development of lung cancer?
A)loss of cilia
B)metastasis
C)thickening and callusing of cells lining the primary bronchi
D)cells with atypical nuclei appear

Question

Quizplus · Accepted Answer

The first step in the development of lung cancer is often the thickening and callusing of cells lining the primary bronchi, which is a response to irritation and damage.

What Appears to Be the First Step in the Development