by means of the high number of investigated samples , more than 350 , the occurrence and distribution of glycocalyceal bodies could be defined more exactly : in all investigated regions of the human respiratory tract -- nose , sinus maxillaris , trachea , and bronchi -- glycocalyceal bodies were found at the apical surface of undifferentiated cells , secretory cells , and metaplastic squamous cells ;
C0035237
respiratory tract
C0040578
trachea