Protein That Helps Form Hair and Nail Tissue
This page is the CodyCross answer for the clue below from Daily Routines, Group 1850, Puzzle 5 (Weekend Activities).
Question is: Protein That Helps Form Hair and Nail Tissue
and the answer is: KERATIN
Word Meaning:
KERATIN — (biochemistry) The protein of which hair and nails are composed.
Definitions from Wiktionary.