Cho told Hermione to feed more of the Blood Replenishing potion that Mipsy brought to Malfoy, while she spoke more spells, "Auravulnus..." This one was oftentimes used to heal wounds that had been caused by dark magic or cursed objects. The spell created a pulsing blue light that spread through Malfoy’s back, repairing tissues. "Profundereparo..." Used to heal deep tissue damage caused by dark spells. A pulsing green light shot from Cho’s wand and spread through the injuries. "Venenorecura..." Since they both weren’t sure what exactly was in those wounds, Cho conjured a spell used to heal the effects of poison or venom, that could be caused by poisonous or cursed objects. The spells seemed to help tremendously – the bleeding stopped, the runes no longer seemed red and angry, and the skin around the incision seemed to start healing.