This is a preview. Log in through your library . Abstract The leading tips of elongating nerve fibers are enlarged into "growth cones" which are seen in tissue culture to continually undergo changes ...

Thyroid hormone and Vitamin A transform blue eye cells into red and green ones. This transition builds the eye’s center, ...

In vertebrate retinas, specialized photoreceptors responsible for color vision (cone cells) arrange themselves in patterns known as the "cone mosaic." Researchers at the Okinawa Institute of Science ...