All of the following cell types contain the enzyme telomerase which protects the length of telomeres at the end of chromosomes, except:

Telomerase is the enzyme responsible for telomere synthesis and is responsible for maintaining the length of the telomere. Telomerase enzyme is not present in somatic cells. Ref: Lippincott's Illustrated Reviews: Biochemistry, 3rd Edition, Chapter 29, Page 405