In ectodermal dysplasia all of the following structures are affected except:
(Note:- Option '4' is correct according to shafer 4th edition. Actually all the 4th options are involved in ectodermal hypoplasia. Hypoplasia of salivary glands with resultant xerostomia is also seen in ectodermal dysplasia.)
Hair
Nails
Teeth
Salivary glands