Korean literature is the body of literature produced in the Korean language . For much of Korea's 3,000 years of literary history, it was written both in Hanja and in the Korean script Hangul. It is commonly diided into classical and modern periods, although this distinction is sometimes unclear. Korea is home to the world's !rst metal and copper type, world's earliest "nown printed document and the world's !rst feature script . #yanmar literature was primarily of a religiou s nature and was inscribed on stone. $hese inscriptions go as far bac" as the %egan period in the &&th century. alm(leaf manuscripts and folded paper manuscripts came into e)istence only after the &*th century. $he literature during this period was mainly concerned with the +ana"a tales told by the %uddha to his disciples in answer to certain uestions. It was in the form of drama and epistles or missies, written in erse. +or"s on law and history were written in prose. #any dramas were written during the &-th to &th centuries, while in the &/th century, poems, drama, and chronicles were produced. fter #yanmar fell to the %ritish, the country's literature began to re1ect the impact of a +estern culture2 the arrial of the printing press also in1uenced literature, which preiously had been written for a much smaller audience. lays that had been written for the court became widely aailable2 these plays were not performed on the stage but were meant to be read. IF45$I678 94$ athogen :484:;6I: nything <a person or animal or plant or substance= in which an infectious agent normally lies and multiplies 6:$> 6F 4?I$ way for the causatie agent to be released from the reseroir #6@4 6F $:8#I88I6 +ay that the causatie agent can be transmitted to another reseroir or host where it can lie 6:$> 6F 4$:A :efers to the method by which the pathogen enters the body 87854$I%>4 H68$ 6ne whose biologic defense mechanisms are wea"ened in some way %48$ +A8 F6: 7:848 $6 56$:6> IF45$I68 &. 5>4I9 56$#I$4@ 6%B45$8 C. +8HI9 H@8 3. 5H9I9 86I>4@ @:488I98 D. +4:I9 9>6;48 place to another person or place2 clean techniue 87:9I5> 848I8 ractices that render and "eep objects and areas free from microorganisms2 synonym for sterile techniue Acne vulgaris <or simply acne= is a common human s"in disease, characteried by areas of s"in with seborrhea <scaly red s"in=, comedones<blac"heads and whiteheads=, papules <pinheads=, nodules <large papules=, pimples, and possibly scarring.cne aGects mostly s"in with the densest population of sebaceous follicles 2 these areas include the face, the upper part of the chest, and the bac". 8eere acne is in1ammatory, but acne can also manifest in nonin1ammatory forms. $he lesions are caused by changes in pilosebaceous units, s"in structures consisting of a hair follicle and its associated sebaceous gland, changes that reuire androgen stimulation. cne occurs most commonly during adolescence, aGecting an estimated 0( /0 of teenagers. In adolescence, acne is usually caused by an increase in testosterone , which occurs during puberty, regardless of se).For most people, acne diminishes oer time and tends to disappear J or at the ery least decreases J by age C*. $here is, howeer, no way to predict how long it will ta"e to disappear entirely, and some indiiduals will carry this condition well into their thirties, forties, and beyond. wart is a small, rough growth resembling a cauli1ower or a solid blister. It typically occurs on humans' hands or feet but often in other