title: [Aging phenomenon in the human masseter and superficial temporalis and the comparison with those of 6-month-old fetus].
mesh_terms: D000368:Aged; D000375:Aging; D005260:Female; D005333:Fetus; D006801:Humans; D008297:Male; D008410:Masticatory Muscles / Q000033:anatomy & histology* / Q000196:embryology