Results 21 to 30 of about 29,615 (166)

泽蛙的染色体组型研究

open access: yes野生动物学报, 1994
本文用骨髓细胞制片法,分析了福建产泽蛙的染色体组型。其二倍体染色体数目为26,臂数为肥,配成13对,分为二个组:大型染色体组(NO1-5),小型染色体组(NO6-13)。大型染色体组中除NO3为亚中部着丝粒染色体外,其余为中部着丝粒染色体;小型染色体组中NO6、7对的短臂上有明显次缢痕,除NO8、11对为亚中部着丝粒染色体外,其余均为中部着丝粒染色体。福建产泽蛙中期分裂相中见有B染色体一条,其形态为端着丝粒染色体。通过福建产的泽蛙与安徽、广东、四川及日本和菲律宾等地区泽蛙染色体组型的比较,结果是差异明显,
陈凤英, 曾科文, 王槐, 刘玉堂
doaj  

孕早期B超影像异常与胎儿绒毛染色体异常核型及多态变异关系

open access: yesZhongguo shiyan zhenduanxue, 2022
目的 探讨孕早期B超影像异常与胎儿绒毛染色体异常核型及多态变异关系。方法 对2016年11月至2018年5月到玉林市妇幼保健院就诊孕早期B超影像诊断胎儿异常,孕妇自愿行绒毛产前诊断82例绒毛染色体回顾统计分析。结果 孕早期B超影像异常82例行绒毛染色体培养,培养成功79例,培养成功率96.34%。培养成功79例绒毛染色体核型中,胎儿绒毛染色体异常核型及多态变异检出率,21-三体为11.39%,18-三体为10.13%,特纳综合症为8.86%,嵌合体为3.80%,13-三体为3.80%,易位为2.53 ...
邓国生
doaj  

A novel approach for feline sporotrichosis pathogen detection based on loop‐mediated isothermal amplification

open access: yesVeterinary Dermatology, Volume 36, Issue 4, Page 474-484, August 2025.
Background – Sporotrichosis is a chronic, mycotic infection caused by fungi of the genus Sporothrix. Zoonotic sporotrichosis occurs mainly through S. brasiliensis transmission, resulting from the organism's traumatic introduction via scratches or bites, or contact with exudate from contaminated cats.
Steffanie Amadei   +6 more
wiley   +1 more source

Male infertility with chromosomal abnormalities. III. 46, XYq- [PDF]

open access: yes, 1988
A deletion of the long arm of the Y chromosome (46, XYq-) was found in two cases with normal male habitus but with azoospermia. The first case was of a 28-year-old married man, an office worker, complaining of infertility.
中野, 正則   +13 more
core  

肺癌的细胞遗传学初步研究

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 1986
我们用细胞遗传学方法分析了6例肺癌患者原发肿瘤的G带染色体,结果表明:6例肿瘤均有染色体数目和结构异常;染色体数目分布范围广(从38~180),除1例染色体众数是亚二倍体外,其余各例均为高异倍体。结构方面:每例有3~4个标记染色体和各种异常染色体,其中1q等臂染色体是出现频率较多的标记染包体(4/6),1p等臂染色体亦在3例中可见,其次受累的染色体是3、5、9、11、13号等。 虽然1号染色体的变化与多种肿瘤有关,而在肺癌方面更似有明显的关系,其断裂点在1q11或1p11,断裂后形成恒定的标记染色体 ...
方嬿
doaj  

华南虎染色体核型分析及带型模式建立研究

open access: yes野生动物学报, 2023
采用外周血淋巴细胞培养及G带染色体标本制作技术,研究和分析华南虎(Panthera tigris amoyensis)染色体的核型和带型。结果表明:华南虎二倍体染色体数为 2n=38条,其中常染色体18对,性染色体1对。常染色体按相对长度从长到短依次编号为1~18。根据着丝粒指数可将华南虎染色体分为4组,即A组(m),包括2、5、13、18和X;B组(Sm),包括1、4、7、8、9、10、11、12、14、17和Y;C组(St),包括3、6;D组(t),包括15、16。核型公式为8(m)+20(Sm)
龚志海   +10 more
doaj  

Comparative efficacy of selenoureido carbonic anhydrase inhibitors and azole antifungal drugs against clinical isolates of Malassezia pachydermatis

open access: yesVeterinary Dermatology, Volume 36, Issue 3, Page 302-313, June 2025.
Background – Malassezia pachydermatis (MP) is implicated in severe dermatitis and otitis externa (OE) of companion animals and recently gained attention for its increasing resistance to azole compounds. For this reason, developing novel therapeutic strategies is of great interest. In a previous work, we used reference yeast isolates to evaluate several
Costanza Spadini   +11 more
wiley   +1 more source

Molecular Cytogenetic Studies on Haliotis diversicolor diversicolor, H. discus hannai and the interspecific hybrid [PDF]

open access: yes, 2016
近年来鲍类养殖存活率急剧下降,种质退化和大规模疾病的发生成为重要原因。为此,开展基础研究迫在眉睫,对遗传背景的研究已成为解决实践问题的前提。本研究以杂色鲍(Haliotisdiversicolordiversicolor)与皱纹盘鲍(H.discushannai)及其杂交子代为实验材料,应用荧光原位杂交(Fluorescenceinsituhybridization,FISH)技术和基因组原位杂交(Genomeinsituhybridization,GISH)技术对它们的染色体进行研究 ...
刘圆圆
core  

毛丝鼠的染色体观察

open access: yes野生动物学报, 1982
毛丝鼠(Chinchilla Laniger)的染色体研究虽有过报道,确定其染色体数为2n=64,但对各对染色体的形态人们并不十分了解。Makino(1953)用睾丸压片技术制备染色体,认为毛丝鼠染色体均属于亚中部着丝点染色体和亚端部着丝点染色体,但论文中没有提供照片。Galton, M.
洪龙, 江三多
doaj  

Intragenic PNPLA1 duplication in Labrador retrievers with nonepidermolytic ichthyosis

open access: yesVeterinary Dermatology, Volume 36, Issue 3, Page 314-320, June 2025.
Background – Ichthyoses represent a heterogeneous group of cornification disorders characterised by epidermal scaling. Objectives – To describe the clinical, histopathological and genetic analysis of a Labrador retriever with nonepidermolytic ichthyosis, and the results of a Labrador retriever population screening for a newly detected PNPLA1 genomic ...
Stefan J. Rietmann   +7 more
wiley   +1 more source

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