Fig. 3.

Numbers of F4/80- , CD68- , ER-MP20-, and ER-MP58-positive cells in dental pulp with development. Data are representative of means±SD; P values of <0.01 were considered to be significant. a In vivo development of F4/80-, CD68-, ER-MP20-, and ER-MP58-positive cells. b Development of F4/80-positive cells in organ culture with or without fetal bovine serum (w/FBS, w/o FBS). c Development of CD68-positive cells in organ culture with or without fetal bovine serum (w/FBS, w/o FBS). d Development of ER-MP20-positive cells in organ culture with or without fetal bovine serum (w/FBS, w/o FBS). e Development of ER-MP58-positive cells in organ culture with or without fetal bovine serum (w/FBS, w/o FBS). *P<0.01, †: in vivo (F4/80), in vitro (w/FBS), ‡: in vivo (CD68), in vitro (w/o FBS), *: in vivo (ER-MP20), in vitro (w/FBS), **: in vivo (ER-MP58), in vitro (w/o FBS); NS not significant