Some researchers have developed some techniques to grow the stem cells to resemble brain cells. The idea is to use dental pulp stem cells for post-stroke patients. The dental pulp is located in the center of a tooth. It is made of living connective tissue and special cells called, odontoblasts. It consists of nerves and blood vessels. The treatment needs to be administered within hours of the stroke. The researchers have shown that the stem cells originated from teeth can grow and develop into networks the way the brain cells do. The cells still do not grow into complete nerve cells, but researchers are very hopeful to get to a point that they would be able to make full neurons. They place the cells into an environment which is very similar to a normal brain environment. If successful, treatment for stroke patients could be done months or even years after suffering the stroke.