The porous outer enamel of unerupted human premolars.
D001641:Bicuspid / Q000648:ultrastructure*; D002648:Child; D003743:Dental Enamel / Q000648:ultrastructure*; D005260:Female; D006801:Humans; D008297:Male; D013499:Surface Properties; D014097:Tooth, Unerupted / Q000648:ultrastructure*