Mucous glands in the middle ear and osseous Eustachian tube.
D000328:Adult; D000368:Aged; D004432:Ear, Middle / Q000033:anatomy & histology*; D005064:Eustachian Tube / Q000033:anatomy & histology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009092:Mucous Membrane / Q000166:cytology*; D000267:Tissue Adhesions