The term rheumatoid factor is identified in base64 scheme by the sequence cmhldW1hdG9pZCBmYWN0b3I=, while the MD5 signature is equal to ddd6fdc3828536009f69370489f8d0b7. The ASCII encoding of rheumatoid factor in hexadecimal notation is 726865756d61746f696420666163746f72.