细胞学

When EMS was applied, it was found that 2.0% EMS resulted the highest microkernel rate (15.6‰). Treating the materials with 2.0% EMS for 4 hours could lead to semi-lethal. Cytological observations found that chromosome aberration phenomena such as single microkernel, double microkernel, three microkernel, chromosome bridge, resort chromosome and syncytium were presented in the mutants.

EMS诱变途径中，浓度为2.0 %处理时间为4 h的组合获得最高的微核率（15.6‰），EMS浓度为2.0 %处理时间为4 h的组合使材料达到半致死；细胞学的观察看到了单微核、双微核、三微核、染色体桥、滞留染色体和合胞体等染色体畸变现象，再生苗中发现了1棵变异株。60Co辐射的诱变途径中，20Gy的剂量使不定芽半致死，再生苗中发现了1棵变异株。

In conclusion, abnormal meiosis of PM-Cs is the cytogenetic causes for fertility reduction of tetraploid melon.

花粉母细胞减数分裂的异常是同源四倍体甜瓜育性低的细胞学原因。

OBJECTIVE: To study the value of the fine needle aspirationin cytological examination for child thyroiditis.

目的： 探讨细针吸取细胞学检查对儿童甲状腺炎的诊断价值。

A description of specimen type. Conventional Pap smear, liquid based cytology, or other.

样本描述。按惯例行巴氏涂片，液基细胞学检查或者其他类似检查。

A description of specimen type. Conventional Pap smear, liquidbased cytology, or other.

样本描述。按惯例行巴氏涂片，液基细胞学检查或者其他类似检查。

Superior mesenteric artery was clipped for 60 min to cause ischimia, and then unclipped to make reperfusion for 2 hours after reperfusion, the liver tissues were gathered and homogenized respectively, and the contents of SOD, GSHPX, MDA and ATPase,and morphological changes of hepatocytes were assayed.

夹闭大鼠肠系膜上动脉60 min造成缺血，再灌注2 h后取出肝组织制成匀浆，测定超氧化物歧化酶、谷胱甘肽过氧化酶、丙二醛、Ca2+Mg2+ATP酶的含量及肝形态细胞学变化。

Superior mesenteric artery was clipped for 60 min to cause ischimia,and then unclipped to make reperfusion.2 hours after reperfusion,the renal tissues were gathered and homogenized,and the contents of SOD,GSHPX,MDA and Ca2+Mg2+ATPase,and morphological changes of renal were assayed.

夹闭大鼠肠系膜上动脉60min造成缺血，再灌注2h后取出肾组织制成匀浆，测定超氧化物歧化酶、谷胱甘肽过氧化酶、Ca2+Mg2+ATPase的活性及丙二醛含量，观察肾组织形态细胞学变化。

Objective To study the method of isolation and cultivation of neural stem cells from newborn rat spinal cords and identification of its differentiation,to establish cytological foundation for vicariousness therapy of peripheral nerveous system diseases by using spinal stem cells.

目的：探讨分离、培养新生大鼠脊髓源性神经干细胞的方法并对其进行分化鉴定，为临床应用脊髓神经干细胞进行周围神经系统疾病的替代治疗奠定细胞学基础。

The single micronucleus and multi-micronucleus were observed at the interphase. The chromosome aberrational cells including chromosome fragment, lagging chromosome, chromosome bridge and circular chromosome were found during the mitosis. RAPD analysis of seedling genomic DNA variation in M 2 generation of three mutants showed their DNA sequences had changed. The result confirmed that the implantation of 7Li +3 ions could induce genetic mutation in wheat.

对幼苗根尖细胞学研究观察，获得单桥、双桥、桥断裂、落后染色体、三级、断片和微核等畸变类型；对已获得的小麦突变株，分别进行M2 代DNA分子的RAPD分析，结果发现DNA均发生变异，证明7Li+ 3 注入通过内靶核反应能够诱发小麦在分子水平上产生遗传变异。

Cytological studies show that the incompatibility of interspecific hybridization of Abies is mainly due to the abort of embryos or ovules.

细胞学研究发现，杂种胚阶段胚或胚珠的败育是冷杉种间杂交不成功的主要原因。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。