The term cluster of differentiation 4 is identified in base64 scheme by the sequence Y2x1c3RlciBvZiBkaWZmZXJlbnRpYXRpb24gNA==, while the MD5 signature is equal to 2150e82f76dac53f829258f7e4039551. The ASCII encoding of cluster of differentiation 4 in hexadecimal notation is 636c7573746572206f6620646966666572656e74696174696f6e2034.