This article describes the myelin sheath as “made of protein.” However, Merriam-Webster’s Collegiate Dictionary (online) provides the following definition of myelin: “a soft white somewhat fatty material …” (emphasis added).
Ann M. Throckmorton La Mesa, Calif.
That’s right. There was an oversimplification in the story. Myelin is made up mostly of lipids
.–D. Christensen
From the Nature Index
Paid Content
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.