Pengaruh 6-Paradol terhadap Kerusakan Ultrastruktur serta Aktivitas Asetilkolinesterase, Glutation-S-Transferase, dan Sitokrom C-Oksidase pada Pediculus humanus capitis: Studi Eksperimental In Vitro = Effects of 6-Paradol on Ultrastructural Damage and Acetylcholinesterase, Glutathione-S-Transferase, and Cytochrome C-Oxidase Activity in Pediculus humanus capitis: In Vitro Experimental Study