Section two the evaluation of biocompatibility of the acellular dermal matrix by the method of cell culture. the new born rat ' s epdermic cells were cultured with the acellular dermal matrix together as experiment group, while the epdermic cell were cultured simply as control. 24 hours later, under the invert microscope, the epidermic cells anchored well and transparent flat cells were observed in both groups. 7 days later, both cultured cells were taked out and fixed in 95 % ethanol, stained with hematoxylin and were observed under light microscope. many cleaved cells were observed in both groups. during cell culture, no pathogenic microganism was observed. so we considered the acellular dermal matrix was aseptic and had good biocompatibility. section three subdermal implantation of the acellular dermal matrix. 24 rats were used in the experiments. a piece of acellular dermal matrix ( 1. 5 x 1. 5cm2 ) was implanted beneath the dorsum skin flaps of each rat, 1 week, 2 weeks, 3 weeks and 4 weeks after implantation, 6 pieces of acellular dermal matrix were harvested and the size of implanted acellular dermal matrix were measured, the sections were used for he staining and observed under light microscope. the result were as folio wing : 1 - 2 weeks after implantation, the acellular dermal matrix began to adhere to the tissue around and turned red gradually ; 3 - 4weeks after implantation, the acellular dermal matrix adhered closely to the tissue around and could be recognized easily, 1 - 3 weeks after implantation, the size of implanted acellular dermal matrix had no statistical difference ( p > 0. 05 ). 4 weeks after implantation implanted acellular dermal matrix contracted ( p < 0. 05 ). under light microscope, l - 2weeks after implantation, the fibroblast cells infiltrated the acellular dermal matrix and a small amount endothelial cells of vessel and lympho - histiocytic cells infiltrated the acellular dermal matrix. 3 - 4 weeks after implantation, infiltrating blood vessels were evident. so we think that the acellular dermal matrix had low immunological reactions and could induce the infiltration of fibroblast macrophage cell and the endothelial cells of vessel
結果如下:皮下包埋卜周者,無細胞真皮基質漸與周圍組織粘附,顏色由蒼白轉紅;皮下包埋3周者,無細胞真皮基質與周圍組織緊密枯附,盾晰
葉辯;術后卜周,包埋的基質面積變化較包埋前無統計學差異o川0引,術后4周包埋的無細胞真皮基質面積較包埋前
縮小j刃刀5 ) 。光鏡下術后卜周,宿主的淋巳組織細胞、成纖維細胞浸入生長,釉附在膠原纖維上,少量血管內皮細胞浸入基質;術后34周,無細胞真皮基質內較多的血管形成,故可認為無細胞真皮基質免疫原性低,能誘導宿主的成纖維細胞、巨噬細胞浸入生長,為一種新型的真皮替代物。第四部分無細胞真皮基質與自體斷層皮片復合移棺的研究, sd大鼠10隻,在其背部卜方造成全厚皮膚缺損的創面
Erosive action is achieved at each contraction where a pair of opposing vanes are installed.
在每個收
縮區段中相對地設置一對
葉片,都起到了沖洗作用。
Leaves crowded near apex of the trunk, spirally arranged ; stipes dark brown, with sharp spines ; lamina large, oblong, tripinnate ; pinnae 17 - 20 pairs, alternate, longest one to 60 cm long, the basal one reduced ; rachis short - spiny ; pinnules 18 - 20 pairs, sessile or nearly so, lanceolate, to 10 cm long and 2. 5 cm wide, divided almost to the costa ; segments more or less falcate, toothed
葉螺旋狀排列,聚生於莖端;
葉柄棕色,具銳刺;
葉片大,長矩圓形,三回羽狀深裂;羽片17 - 20對,互生,最大的長達60厘米,基部一對
縮短,羽軸有短刺;小羽片18 - 20對,無柄或近於無柄,披針形,長達10厘米,寬2 . 5厘米,深裂幾達中脈;末回裂片多少鐮狀,有齒。
The time defiance intensive repair serum from artistry contains 33 different kinds of highly concentrated essences and an advanced dna complex containing 10 precious plant extracts such as licorice root extract, alpinia speciosa extract, sunflower seed extract, echinacea extract, centella asiatica extract, hexose, hydrolyzed oats, rosemary leaf extract, vitamin c derivatives and t4 endonuclease ( extracted from the bacteria micrococcus leutus )
雅姿特效滋養活顏14 ,每瓶含有33種珍貴護膚成分之高度濃
縮精華配方,其中以尖端科技提煉的dna復合精華,包含10種珍貴天然植物精華,包括?甘草根、月桃
葉、向日葵籽、紫錐花、積雪草、己糖、燕麥和迷迭香、維他命c提煉物與t4酵素,有效提供5大護膚功效。
Two important virus diseases, maize dwarf mosaic and stunt, both transmitted by leaf hoppers
另外兩種重要的病毒性疾病分別是玉米嵌紋病毒和萎
縮性黑穗病,都是通過
葉蟬傳播。
Detail of young leaves and growing point ; many leaves reduced to bare midrib or narrow green corrugated residue of lamina ; youngest leaves and growing point brown and dead ; large green stipular lamina around crown
缺錳甘藍的「鞭尾癥:關鍵在於嫩
葉和生長點,許多
葉片露出中脈或
縮小成綠色波狀的薄層殘留,心
葉和生長點變褐並死亡,頂部周圍有大量綠色長有托
葉的
葉片。
Their clients include several major food and pharmaceutical companies which have asked for vehicles for nutraceuticals such as lycopene ( which can lower the risk of contracting prostrate or breast cancer ), phytosterol ( which helps prevent the accumulation of cholesterol ), and lutein ( which retards cataract growth )
他們的客戶包括一些大型食品及制藥公司,要求製作的"納米車"包括能降低患收
縮無力前列腺癌和乳腺癌的可能性的番茄紅素,有助於防止膽固醇積累的植物甾醇,以及能阻止白內障形成的
葉黃素。
Some virulent strains of pvx cause rugosity go the leaves even crinkling, called pvx crinkle
Pvx的有些強毒株系引起
葉子的粗
縮甚至皺
縮,叫做pvx皺
縮。
An example is the sensitive plant ( mimosapudica ), whose leaflets progressively collapse, sometimes throughout the whole plant, once one leaflet is touched
例如含羞草(含羞草屬) ,當它的1個小
葉被觸碰時,
葉狀體逐漸皺
縮,有時遍及整個植株。
The leaves are shrivelled up by the heat.
酷暑使樹
葉卷
縮枯萎。
Compressible cascade flow
可壓縮葉柵氣流