It turns out, you can get the building blocks, monomers, as they're called, and if you let them go into the brain and then trigger the chemical reactions, you can get them to form those long chains, right there inside the brain tissue.
Ao que parece, podemos usar os blocos de construção, chamados monómeros, e se os deixarmos entrar no cérebro e ativar as reações químicas, podemos fazer com que formem as tais cadeias longas, mesmo no interior do tecido cerebral.