Muggle science, muggle science... Oliver remembered something about this... although it hurt his brain trying to bring it to the surface. His mind was filled with much more important stuff.. like Quidditch, Star Wars and redheaded prefects. heh.

He raised his hand slowly. “Um.. doesn't Bran contain Vitamin D?" He asked hesitantly. "Vitamin D regulates the absorption of calcium and.. phosphorus. Both of which are vital for growth and development of bones and teeth.”

"Also a lack of Vitamin D can cause thin, brittle, or misshapen bones.. so it could also be needed for the structure when regrowing bones?"

Urhh.. that was painful. The lad went back to looking a bit glazed as Lafay continued the class.