The term rh-negative blood is identified in base64 scheme by the sequence cmgtbmVnYXRpdmUgYmxvb2Q=, while the MD5 signature is equal to 4f08ef832385d7c69855255bcf255748. The ASCII encoding of rh-negative blood in hexadecimal notation is 72682d6e6567617469766520626c6f6f64.