Download PASSEMALL Prep app now
Scan QR code or get instant email to install app
Question:
Keratin is a family of fibrous structural proteins. Keratin is the key structural component of hair, nails, and the outer layer of human skin.
Comments
Your email address will not be published. Required fields are marked *
Comment *
Name*
Email*
URL
Save my name, email, and website in this browser for the next time I comment.
Comments