Once under anesthesia, the rat is positioned in dorsal recumbency. A 3-cm × 4-cm section of fur is shaved from the ventral abdomen; the distal aspect of the shaved area is 1–2 cm proximal to ...

Then the rat fur appears. It grows out of Billy's skin, then goes away like it was never there. The more Billy looks in the mirror and scratches, the more he's forced to face the unthinkable ...