title: Studies on middle ear effusions.
mesh_terms: D000818:Animals; D002648:Child; D002675:Child, Preschool; D002682:Chinchilla; D005122:Exudates and Transudates / Q000032:analysis* / Q000187:drug effects; D005260:Female; D006801:Humans; D007223:Infant; D007770:L-Lactate Dehydrogenase / Q000032:analysis; D008297:Male; D009113:Muramidase / Q000032:analysis; D010033:Otitis Media / Q000378:metabolism*; D010034:Otitis Media with Effusion / Q000188:drug therapy / Q000378:metabolism*; D010035:Otitis Media, Suppurative / Q000378:metabolism; D010406:Penicillins / Q000627:therapeutic use
chemical_list: D010406:Penicillins; D007770:L-Lactate Dehydrogenase; D009113:Muramidase