All of the following are types of ROS EXCEPT:

GM-CSF is considered a(n):

a. Early-acting cytokine b. Late-acting cytokine c. Lineage-specific cytokine d. Early-acting and multilineage cytokine

Which of these mandibular teeth generally have the longest roots?

a. Central incisors b. Lateral incisors c. Canines d. Premolars