title: Limitations of countercurrent immunoelectrophoresis (CIE) in the diagnosis of empyema.
mesh_terms: D002648:Child; D003378:Counterimmunoelectrophoresis / Q000379:methods*; D004653:Empyema / Q000175:diagnosis*; D005069:Evaluation Studies as Topic; D005188:False Negative Reactions; D006192:Haemophilus Infections / Q000175:diagnosis*; D006193:Haemophilus influenzae; D006801:Humans; D007122:Immunoelectrophoresis / Q000379:methods*; D010996:Pleural Effusion / Q000175:diagnosis; D011008:Pneumococcal Infections / Q000175:diagnosis*