The term external respiration is identified in base64 scheme by the sequence ZXh0ZXJuYWwgcmVzcGlyYXRpb24=, while the MD5 signature is equal to 9c7e4365bac5f83fbc4d14112ce0cd3a. The ASCII encoding of external respiration in hexadecimal notation is 65787465726e616c207265737069726174696f6e.