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(单词翻译:双击或拖选)
Gangrene - the death of tissue on a large scale. May be caused by certain bacteria which spread rapidly through tissues, or by an inadequate1 blood supply.
Ganglion - a collection of nerve cells usually found outside the central nervous system, from which axons arrive from the periphery2 and proceed to the spinal3 cord or brain.
Gene4 cloning - a technique which uses recombinant DNA5, inserted into a host cell as a plasmid which reproduces copies of itself, and hence the inserted gene, many times
Generic6 - belonging to the same main group. For example generic medicines are identified by the main group they fall into rather than by their trade names.
Genes7 - the unit of inheritance that transmits information from one cell to its daughters and hence to the next generation. A gene consists of a specific series of DNA nucleotides. Each three nucleotides is the code for an amino acid. Humans have about 200,000 genes which collectively are know as the genome.
Genetic8 engineering - see recombinant DNA.
Genome - the complete complement9 ofgenetic material in a species.
Gingival crevice10 fluid - a secretion11 found in the gingival sulcus, formed by the cells attaching the gingival epithelium to the tooth.
Gingival sulcus - a potential space between the gingival margin12 and the tooth, lined by non-keratinised epithelium. The depth of the sulcus is normally between 1 and 2 mm in health.
Gingivitis - an inflammation of the gingival mucosa, due to the increase in the virulence13 or mass of bacteria in the gingival sulcus, or to reduced resistance of the host.
Glands14 - a collection of cells secreting15 a specific product such as insulin or sweat.
Glucocorticoids - one of the two major hormones16 secreted17 by the adrenal medulla. The most common glucocorticoid is cortisol (hydrocortisone) but they all share the common effect of increasing blood glucose18 concentration. They may achieve this at the cost of body protein stores, by converting amino acids into glucose. Cortisol also converts fatty acids into glucose. Any type of stress, including trauma19, infection, fear, anxiety or malnutrition20 causes an increase in cortisol secretion. Cortisol stabilises the membrane21 of lysosomes, which are then unlikely to rupture22, a process which stimulates23 inflammation. Cortisol therfore inhibits24 inflammation. Cells like neutrophils, are less able to protect the body from foreign proteins. Stress therefore reduces the bodies ability to cope with infection. Malnutrition not only stunts25 mental and physical development but also allows viral, bacterial26 and parasitic27 infections to flourish.
1 inadequate | |
adj.(for,to)不充足的,不适当的 | |
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2 periphery | |
n.(圆体的)外面;周围 | |
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3 spinal | |
adj.针的,尖刺的,尖刺状突起的;adj.脊骨的,脊髓的 | |
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4 gene | |
n.遗传因子,基因 | |
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5 DNA | |
(缩)deoxyribonucleic acid 脱氧核糖核酸 | |
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6 generic | |
adj.一般的,普通的,共有的 | |
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7 genes | |
n.基因( gene的名词复数 ) | |
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8 genetic | |
adj.遗传的,遗传学的 | |
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9 complement | |
n.补足物,船上的定员;补语;vt.补充,补足 | |
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10 crevice | |
n.(岩石、墙等)裂缝;缺口 | |
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11 secretion | |
n.分泌 | |
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12 margin | |
n.页边空白;差额;余地,余裕;边,边缘 | |
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13 virulence | |
n.毒力,毒性;病毒性;致病力 | |
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14 glands | |
n.腺( gland的名词复数 ) | |
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15 secreting | |
v.(尤指动物或植物器官)分泌( secrete的现在分词 );隐匿,隐藏 | |
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16 hormones | |
n. 荷尔蒙,激素 名词hormone的复数形式 | |
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17 secreted | |
v.(尤指动物或植物器官)分泌( secrete的过去式和过去分词 );隐匿,隐藏 | |
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18 glucose | |
n.葡萄糖 | |
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19 trauma | |
n.外伤,精神创伤 | |
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20 malnutrition | |
n.营养不良 | |
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21 membrane | |
n.薄膜,膜皮,羊皮纸 | |
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22 rupture | |
n.破裂;(关系的)决裂;v.(使)破裂 | |
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23 stimulates | |
v.刺激( stimulate的第三人称单数 );激励;使兴奋;起兴奋作用,起刺激作用,起促进作用 | |
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24 inhibits | |
阻止,抑制( inhibit的第三人称单数 ); 使拘束,使尴尬 | |
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25 stunts | |
n.惊人的表演( stunt的名词复数 );(广告中)引人注目的花招;愚蠢行为;危险举动v.阻碍…发育[生长],抑制,妨碍( stunt的第三人称单数 ) | |
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26 bacterial | |
a.细菌的 | |
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27 parasitic | |
adj.寄生的 | |
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