The term pulmonary vein is identified in base64 scheme by the sequence cHVsbW9uYXJ5IHZlaW4=, while the MD5 signature is equal to 6a1e702b846128f805599de9c93f0c0d. The ASCII encoding of pulmonary vein in hexadecimal notation is 70756c6d6f6e617279207665696e.