02029nas a2200241   4500008004100000020001400041245014100055210006900196260002400265300001400289490000800303520120400311653001201515653003001527653002201557653001401579653003701593100002401630700002401654700001601678700001701694856007601711       1998                        eng d  a1072-471000aThe adherent cylindrical nit structure and its chemical denaturation in vitro: an assessment with therapeutic implications for head lice0 aadherent cylindrical nit structure and its chemical denaturation  aUNITED STATESc1998  a711 - 7120 v1523 a<p>Pediculus humanus capitis is the insect responsible for head lice. During the female louse&#39;s 30-day lifespan, she lays approximately 10 eggs per day and attaches each of them with a gluelike, waterproof substance to human hair, 1 mm from the scalp. Larvae emerge 8 to 10 days later from these nits, or eggs, which remain firmly attached to hair.No topical agent has been shown to be 100% ovicidal.1 The existence of any nits, a major aspect of lice infestations, signifies the potential that this contagious malady may still be present. Many schools, therefore, adhere to a &quot;no-nit&quot; policy before children can reenter the classroom after infestation, thereby imposing prolonged absenteeism. Insecticides fail to kill all nits and larvae because they act on the insects&#39; central nervous systems, which are not fully developed in the first 4 days of the insects&#39; existence. Several products, namely, Clear lice egg remover gel (Care Technologies, Greenwich, Conn), Step 2 (Genderm, Lincolnshire, Ill), and a 50/50 mixture of vinegar and water, have been suggested as beneficial in nit removal. However, no clinical benefit has been documented in the medical literature.2</p>
10aanimals10aLice Infestations/therapy10aOvum/drug effects10aPediculus10aResearch Support, Non-U.S. Gov't1 aBurkhart, Craig, N.1 aBurkhart, Craig, G.1 aPchalek, I.1 aArbogast, J.  uhttps://jamanetwork.com/journals/jamapediatrics/article-abstract/189651