pharyngeal aspiration
... that pharyngeal aspiration is a widely used method for studying the respiratory toxicity of carbon nanotubes?
... that <b id="mwBRI"><a href="./Pharyngeal_aspiration" id="mwBRM" rel="mw:WikiLink" title="Pharyngeal aspiration">pharyngeal aspiration</a></b> is a widely used method for studying the respiratory toxicity of <a href="./Carbon_nanotube" id="mwBRQ" rel="mw:WikiLink" title="Carbon nanotube">carbon nanotubes</a>?