FOSB and myeloid sarcoma: Additionally, the number of FosB immunopositive cells in the PVN was found to be significantly higher in MS females compared to control females ([F (1,18) = 5.87, p<0.05]; Fig. 5B for control, Fig. 5C for MS), although no significant treatment and stimuli interactions were found [F (2,18) = 1.46, p = 0.26].