色素细胞

The chemical mechanism for the expression of flower color is the ratio of different type of pigments in petals; the anatomic and optical mechanism for the expression of flower color are the dimensional distribution of the pigments in petals and their effects on light; and the physiological mechanism are the pH of cell sap of petal, the developmental stage and the endogenous hormones of flower.

花色素的存在及其变化是植物花色表现的化学机制，色素在花瓣中的空间分布及其对光的作用是花色表现的解剖学和光学机制，细胞液pH值、花发育阶段和植物激素是花色表现的植物生理学机制。

Objective To study some possible apoptosis mechanisms of the process of retinal degeneration in rds mice.

目的探讨细胞因子Ⅱ在视网膜色素变性过程中表达的变化，以此窥视遗传性视网膜色素变性的转基因小鼠发病的某些可能因素。

Increase the skin chromatophere's supersession function, make the skin of the dark and pigmentation recover to be youthful, white and beautiful.

增加皮肤色素新陈代谢功能，消除病变的老化细胞，使晦暗及色素沉着的皮肤回复青春活力、白皙靓丽。

In this study, six patients with piebaldism had removal of achromic epidermis via appropriately set erbium:YAG laser followed by application of autologous cultured epidermal grafts on the recipient bed. The 3,4-dihydroxyphenylalanine reaction was used to determine melanocyte content, and a semiautomatic image analysis system calculated the percentage of repigmentation.

在这项研究中，六名通过适当能量设定之铒-雅克雷射，移除色素缺乏表皮的白斑病患，在受体皮肤上以自体培养表皮移植的应用加以追踪。3.4-羟基苯丙胺酸反应用以测定黑色素细胞内容，并以半自动影像分析系统计算再色素沉淀的百分比。

The research results indicate that LED integrated photopanel as interior illuminant, which emit monochromic light such as red light(660～680nm)and blue light(430～450nm), not only cover with spectrums absorbed by the plant or algae for photosynthesis, enhance the light energy absorbed by chlorophyll a and the growth of Spirulina platensis, increase greatly microalgal biomass and the its content of photosynthetic pigments; but also decrease enormously the absorption spectrums not need for photosynthesis, save energy at more than 38.75%.

从LED集成光电板的光电特性、光热效应、光衰减性、光辐射特征与植物和藻类光吸收特征的相匹配性及LED辐射单色光对螺旋藻的光合色素含量的影响等几方面，分析研究了LED集成光电板作为光生物反应器内部光源的特性及可行性，研究结果表明，LED集成光电板作为光生物反应器的内部光源，它所发射的单色光谱红光660～680nm、蓝光(430～450nm，不仅能覆盖植物和藻类光合作用所需要吸收的光谱能带，促进叶绿素a对光能的吸收和螺旋藻的生长，增强光合作用，使细胞生物量与光合色素含量显著提高；而且不被吸收的光谱减少，节能达38.75％，无疑它将是光生物反应器潜在最有效的光源。

Methods The ARPE-19 cells were transfected with Mir-155,and then put into hypoxic chamber for 0hr、8hr、24hr、48hr,the proliferation of ARPE-19 cells was evaluated by[3-(4,5-dimethylthiazole-2yl)-2,5-diphenyl tetrazolium bromid, MTT]-test.

Mir-155转染视网膜色素上皮细胞株ARPE-19细胞后，将其置缺氧环境0hr、8hr、24hr、48hr后，MTT比色法检测ARPE-19细胞的增殖，流式细胞仪检测细胞凋亡率。

The results show that a large number of cone cells distributes in the central area of retina, and the number of cell in outer nuclear layer and ganglion cell layer is approximate, and the protuberances of pigment epithelium cells extend to cones and rods layer, which suggest that Zoacys dhumnades is diurnal habitual species.

结果表明，乌梢蛇视网膜中央区分布着大量的视锥细胞，外核层与节细胞层的细胞数量相当，色素上皮层的细胞有许多突起伸向视杆视锥层内，说明乌梢蛇是一种昼行性蛇类。

Methods The experimental mice were given 200 g/L sweetpotato anthocyanin with a dose of 36 mL/kg, three times a day, for 14 days. Body weight and death rate were recorded. The mutagenicity of sparfloxacin on CHL cell in the presence and absence of S9mix was evaluated.

采用最大给药量试验，小鼠每天3次、每次36 mL/kg灌胃给予200 g/L的青紫薯色素水溶液14 d，观察其体质量变化和死亡情况；以仓鼠肺成纤维细胞行染色体畸变试验，对青紫薯色素进行毒理学评价。

Mole: Pigmented flat or fleshy skin mark, made up mostly of cells that produce melanin, which

色素痣：扁平或赘肉样、有色素沈着的皮损，主要由产生黑素的细胞聚集构成，呈深褐色以至黑色，当黑素沉积于真皮时，皮损则带蓝色。

" Mole: Pigmented flat or fleshy skin mark, made up mostly of cells that produce melanin, which gives mole s their light to dark brown or black colour and, in the dermis, a bluish cast."

色素痣：扁平或赘肉样、有色素沈着的皮损，主要由产生黑素的细胞聚集构成，呈深褐色以至黑色，当黑素沉积于真皮时，皮损则带蓝色。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。