Imagine losing a finger in a kitchen mishap or an entire limb in an accident. Instead of learning to adapt to a prosthetic, your doctor prescribes you a serum. A few months later, your bone, muscle, nerves, and skin have perfectly knit themselves back together. Your limb is entirely regrown.

It sounds like pure science fiction, but scientists are currently working to unlock the secrets of limb regeneration in mammals, drawing inspiration from salamanders. Axolotls, a type of salamander, can take roughly 40 to 50 days to regrow lost limbs, which is a flash compared to humans and other mammals who lack the ability all together. But a new treatment could change that shortcoming.

In a recent study published in Nature Communications, researchers from Texas A&M University used a specially-formulated serum that encouraged mice to form a blastema—the temporary cellular structure that helps organisms like axolotls regenerate structures.