Three weeks after implanting olfactory ensheathing cells into the injured spinal cord of a rat, a research scientist injects a retrograde label to trace neuronal connections through the lesion. Microscopic examination indicated no movement of the dye through the lesion because of scar tissue that had formed at the site of the injury. The scar tissue is most likely formed by which of the following cell types?

Question

Quizplus · Accepted Answer

Astrocytes are a type of glial cell in the central nervous system that play a key role in the formation of scar tissue following injury, such as in the spinal cord. They proliferate and form a glial scar that can inhibit axonal regrowth through the lesion site.

Three Weeks After Implanting Olfactory Ensheathing Cells into the Injured