Instead, it is a collection of large nerves that have the appearance of a horse's tail. (svsvet.com)
There are currently no solutions for very large nerve defects and large areas of heart wall damage. (sfi.ie)
A 13 - day - old mouse has larger nerve cell responses (top row, middle), but still no blood — that doesn't appear until adulthood (bottom row, right). (sciencenews.org)