Axonal TransportDental Pulp NecrosisAxonsDyneinsStilbamidinesHorseradish PeroxidaseSciatic NerveTetanus ToxinNerve Growth FactorsBiological TransportNeuronsGanglia, SpinalMicrotubule-Associated ProteinsMotor NeuronsNerve Tissue ProteinsSpinal CordBiological Transport, ActiveRats, Sprague-DawleyCells, CulturedKinesinNeurofilament ProteinsProtein TransportOptic NerveKymographyMicrotubules