TL-positive
From Tardis Wiki, the free Doctor Who reference
TL-positive was a blood type that Gallifreyans had. The First Doctor once had to give the Xing surgeon Aldridge two litres of his TL-positive blood for a surgery. (PROSE: A Big Hand for the Doctor [+]Loading...["A Big Hand for the Doctor (short story)"])
Steven Taylor thought the First Doctor's unidentified blood type barely even resembled blood as seen in humans. (AUDIO: An Ideal World [+]Loading...["An Ideal World (audio story)"]) According to Dr Lomax, the Third Doctor's blood had a blood type unidentifiable as human blood, as shown by its platelet stickiness. (TV: Spearhead from Space [+]Loading...["Spearhead from Space (TV story)"])
