Paleontology. Paleontologists get x-ray vision.
Gibbons
Ann
A
D000818:Animals; D003743:Dental Enamel / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D005580:Fossils; D015186:Hominidae / Q000033:anatomy & histology / Q000254:growth & development; D006801:Humans; D010161:Paleodontology / Q000379:methods; D010163:Paleontology / Q000379:methods*; D011859:Radiography; D017356:Synchrotrons; D014070:Tooth / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D014965:X-Rays