The term medullary sheath is identified in base64 scheme by the sequence bWVkdWxsYXJ5IHNoZWF0aA==, while the MD5 signature is equal to d93ba9c5e0cad7632b13209a4dc4f428. The ASCII encoding of medullary sheath in hexadecimal notation is 6d6564756c6c61727920736865617468.