Doctor Vitagliano was a paleo-climatologist.
Vitagliano then called Scully to show her his findings. He tried to induce multiplication in order to get more information, but the division still could not be classified. He did not know what it was growing into. Scully then asked him to compare the samples against Scully's own DNA. It was a match, to Vitagliano's surprise. (TXF: "Redux")