The ³H-thymidine labeling method is especially useful in determining when particular cells in the nervous system emerge because
A)only cells that are fully myelinated at the time of injection are radioactively labeled.
B)only glial cells absorb the marker and are radioactively labeled.
C)only cells that are fully mature at the time of injection are radioactively labeled.
D)only cells that are undergoing cell division at the time of injection are radioactively labeled.

Question

Quizplus · Accepted Answer

The ³H-thymidine labeling method labels cells undergoing cell division at the time of injection with radioactive thymidine. As such, this method is useful in determining when particular cells are emerging because it labels cells that are actively dividing and therefore in the process of maturing and differentiating. Other cell types, such as mature and fully myelinated cells or glial cells, may not take up the marker and be labeled in this way.

The ³H-Thymidine Labeling Method Is Especially Useful in Determining When