The much fainter stain is the neutral red. The cells don't scream, but they are visible. These Web-based programs utilize still images. Our CD-ROM tutorials are authored in HTML and combine text, graphics, still images, and videos.
Video is provided by several composite sources.
Also included are the Sheep Brain Dissection Guide and The Human Brain Tutorial, enabling the use of these resources without Internet access. As the use of this technology spreads, we plan to add links to additional WWW resources. Helix aspersa that may parallel the tail-flick response in rodents. We also examined whether MK-801 or lidocaine could diminish any sensitization observed. Snails were tested during their dark cycle.