The term meningeal veins is identified in base64 scheme by the sequence bWVuaW5nZWFsIHZlaW5z, while the MD5 signature is equal to d9f7ab1ed1a58151757f49b0da22de4c. The ASCII encoding of meningeal veins in hexadecimal notation is 6d656e696e6765616c207665696e73.