title: HME filter and Ayre's T piece.
mesh_terms: D000776:Anesthesiology / Q000295:instrumentation*; D003428:Cross Infection / Q000517:prevention & control*; D004867:Equipment Design; D005374:Filtration / Q000295:instrumentation*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn