In the toxin entering the neuron while the botulinum toxin binding to the receptor the processes Endocytosis and exocytosis are involved. Both endocytosis and exocytosis are cell processes of bulk transport used to move <span>macromolecules such as proteins or polysaccharides into or out of the cell. By the endcytosis process materials are imported into the cell. </span>In exocytosis<span>, materials are </span>exported<span> out of the cell via secretory vesicles</span>
The vesicular process involved in the toxin entering the neuron is endocytosis process.
Explanation; Endocytosis is a vesicular process, that involves capturing a particle or a substance from the outside of a cell by engulfing it with the cell membrane, and bringing it into the cell. Botulinum toxin binds to the neuronal cell membranes at the nerve terminus and enters the neuron by endocytosis.
Sulfa drugs, such as antibiotics that contain sulfonamides. Example: Some combination drugs such as Sulfamethoxazole-trimethoprim (Septra, Bactrim) and Erythromycin-sulfisoxazole contain sulfonamides. <span>