pubmed-article:11915065 | pubmed:abstractText | We tested the hypothesis that the duration of cutaneous anesthesia elicited by the permanently charged compound N-phenylethyl lidocaine (tonicaine) would be longer than that elicited by its parent structure, lidocaine, and that it would be less affected by epinephrine (epi), after subcutaneous injection in rats, as a model for infiltration anesthesia. | lld:pubmed |