and connective tissue cells. Neuronal stem cells produce a variety of nervous system tissue, mostly during early embryonic development but, as we are beginning to learn, later in life as well.

There was, however, a tissue that seemed to belie cell theory — nervous tissue. Because of its softness and fragility, it was difficult to handle and susceptible to deterioration. But it was ...

How does a three-pound mass of wet gray tissue (the brain ... intriguing issue. The nervous system is about 550 million years old, and it first came about when cells decided to make animals.

while high calorie intake increases immune activation in the central nervous system. Here the authors show that reduced regulatory T cells in the hypothalamus contribute to elevated immune ...

Penn Vet researchers show that the immune system can recognize and control the latent stage of the parasite Toxoplasma gondii ...

During the development of an embryo, this rod-like tissue acts as a kind of crucial scaffold, and helps dictate where cells should build out the spine and nervous system. This is the first stem ...