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1.
随机选择经长期随访证实的滤泡性甲状腺癌和腺瘤各10例,正常甲状腺组织5例作为对照。按Ploton的染色方法和Crocker推荐的计数方法分别计算三组每例各50个细胞的Ag-NOR嗜银颗粒平均数,再算出三组各自的AgNOR均数,经统计学检验三者有极显著性差异。可望成为甲状腺滤泡性肿瘤良恶鉴别的一项辅助指标。 相似文献
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应用免疫组化(ABC法)和银染技术检测10树前列腺癌和20例前列腺增生患者增殖细胞核抗原(PCNA)和核仁组成区嗜银蛋白(AgNOR)数量变化.结果显示PCNA阳性检出率及AgNOR计数有显著差异(P<0.01).且随肿瘤分级增高而增高.随访资料显示PCNA强级(~)者,AgNOR计数高者预后明显低于PCNA弱级(~),AgNOR计数低者.结果提示PCNA,AgNOR可作为前列腺良恶性肿瘤鉴别诊断指标之一,并且与前列腺癌恶性程度有关,对推测预后具有重要参考价值。 相似文献
4.
目的:探讨肺良恶性病变中角蛋白和核仁组织区的表达意义。方法:采用免疫组化ABC法和AgNOR染色,对54例肺良恶性病变进行检测。结果:角蛋白表达在低分化腺癌最高,AgNOR表达以未分化癌最高。结论:角蛋白对判定肺癌类型有一定帮助,AgNOR颗粒数目对判定肺癌的分化程度和预后有重要意义。角蛋白和AgNOR对肺癌的类型鉴别及预后判定有重要作用。 相似文献
5.
Giuseppe Giuffrè Rosario Alberto Caruso Gaetano Barresi G. Tuccari 《Virchows Archiv : an international journal of pathology》1998,432(3):261-266
To assess the prognostic significance of silver-stained nucleolar organizer region (AgNOR) proteins, a standardized AgNOR
analysis was performed on 78 patients affected by early (EGC, n=24) or advanced (AGC, n=54) gastric carcinomas. The histopathological diagnosis, grading and staging were done according to WHO and UICC recommendations;
the mean follow-up time was 56.9 months. Visualization and quantification of AgNORs were made in formalin-fixed, paraffin-embedded
sections as specified in the guidelines of the Committee on AgNOR Quantification (1995). Statistical analysis was performed
on the mean AgNOR area values (NORA). Highly significant differences (P<0.001) were found in NORA values between EGC and AGC, between low- and high-grade gastric carcinomas and between patients
dead from gastric cancer and living patients. In addition, significant P values were found on comparison of NORA values relating to pT status, pN status and stage. Comparison of Kaplan-Meier survival
curves revealed that patients affected by gastric carcinomas with higher NORA values (>5.213 μm2) had a worse prognosis. Finally, using Cox multiple regression analysis, the AgNOR quantity emerged as a useful independent
prognostic variable to predict the final outcome of patients affected by EGC or AGC.
Received: 26 September 1997 / Accepted: 26 January 1998 相似文献
6.
Iwashita T Mori H Ito Y Obashi A Sugimoto K Tei H Hirata I Oshiba S 《Pathology international》1996,46(3):204-210
Colorectal neoplasms obtained at colonoscopy were examined by argyrophilic nucleolar organizer region (AgNOR) staining to evaluate the usefulness of AgNOR as a discriminant for malignancy. AgNOR dots were divided into two kinds: 'structures' (larger and less-densely stained) corresponding to the nucleolus, and 'units' (smaller and densely stained) presumed to be true AgNOR within the structure. The number of structures per nucleus did not differ between the adenoma and carcinoma groups, whereas the number of units per nucleus showed a significant difference. However there were several cases showing an overlap between the adenoma and carcinoma groups, leading to a difficulty in deciding whether any given case was benign or malignant. Three types of AgNOR patterns were categorized based on the ratio of units to structure. Type I was defined as the unit being indistinguishable from the structure, Type II as each structure having one to five units, and Type III as at least one structure having six or more units, irrespective of total number of units per nucleus. The colorectal lesions in which more than half of the neoplastic cells showed Type III coincided well with carcinomas histologically diagnosed, with the exception of adenomas with severe atypia. Labeling index of proliferating cell nuclear antigen (PCNA LI) differed between the adenoma and carcinoma groups with a considerable extent of overlap, and correlated to some extent with the AgNOR values. These results showed that the AgNOR staining was useful for determining malignancy and its usefulness appeared superior to PCNA LI. 相似文献
7.
The effect of a series of fixatives on the AgNOR technique 总被引:6,自引:0,他引:6
With increasing interest being shown in nucleolar organizer regions (NORs) in pathology, it was considered of great importance to evaluate the effect of some of the more commonly used and more specialized fixatives on the demonstration of these moieties. NORs can be demonstrated in paraffin sections by a silver technique (AgNOR method) which was developed from a method used by cytogeneticists for the demonstration of NORs in chromosome spreads. The degree of staining is dependent on the fixation regime employed and results may vary greatly from one fixative to another. The fixative schedules and post-treatments used in this study were based on standard sequences from the literature. We have shown that, in general, alcohol-based fixatives give optimal results, Carnoy's fluid being especially recommended. Mercurial and dichromate-containing fixatives were found to have highly detrimental effects on NOR staining. 'Routine' 10 per cent formol saline fixation gave adequate results whereas 10 per cent neutral buffered formalin gave optimal staining, similar to alcohol-based fixation. 相似文献
8.
目的 探讨核仁组成区嗜银颗粒的计数对于区别乳腺及甲状腺良恶性病变的诊断价值。方法 采用针吸细胞技术对乳腺及甲状腺病变穿刺标本进行核心仁组成区嗜银颗粒定量分析研究。结果 43例不同类型乳腺癌,嗜银颗粒平均值4.40(P〈0.01),12例乳腺上皮良性增生,平均值2.90,45例不同类型甲状腺癌,嗜银颗粒平均值3.50(P〈0.01),10例甲状腺上皮良性增生,平均值1.77,良,恶性肿瘤细嗜银颗粒的 相似文献
9.
PCNA immunostaining combined with AgNOR staining in esophageal squamous cell carcinoma to identify patients with a poor prognosis 总被引:6,自引:0,他引:6
Yoshihisa Morisaki Shingo Shima Yutaka Yoshizumi Yoshiaki Sugiura Susumu Tanaka Seiichi Tamai 《Surgery today》1995,25(5):389-395
Immunostaining of the proliferating cell nuclear antigen (PCNA) provides important information about cell kinetics and is easily performed on routinely obtained formalin-fixed, paraffin-embedded materials. We report herein the results of a retrospective study on PCNA staining in esophageal cancer undertaken to determine its significance. As this study indicated that immunoreactivity was preserved in specimens fixed within 24 h, only 31 specimens from surgical patients were available for this investigation. The mean PCNA index of the patients without invasion to the adventitia (35.7±17.9) was significantly lower than that of those with invasion to the adventitia or neighboring structures (49.7±14.5), while the PCNA index did not correlate with other clinicopathologic parameters such as histologic type, lymph node metastases, or prognosis. However, when an analysis of PCNA staining was combined with an analysis of argyrophilic nucleolar organizer region (AgNOR) staining, a correlation with prognosis was found. In fact, seven patients with a high PCNA index (44) and AgNOR count (6) had a significantly poorer prognosis than the remaining 22 (P=0.0014), and six of these seven patients died within 2 years. These results indicate that this combined evaluation may be useful for the identification of patients with a poor prognosis among those undergoing surgery for esophageal squamous cell carcinoma. 相似文献
10.
为研究多发性骨髓瘤(MM)与反应性浆细胞增多症(RP)、MMIB与MMNA以及MM治疗前后的骨髓浆细胞嗜银蛋白染色(AgNOR)形态颗粒数量的变化,用AgNOR技术.测定各级AgNOR形态及颗粒数量。结果显示,AgNOR形态在MM组中有单一型、弥漫型、聚集型、核仁形,在RP组中只有单一型,AgNOR颗粒均数在MM组中为6.21±4.12,RP组为202±063,两组间有非常显著性差异(P<0.001);MMⅢB和ⅢA组,形态及颗粒均数无差异。17例MM治疗前、后各种形态中颗粒比较差别有显著性(P<0.001)。提示骨髓中浆细胞AgNOR形态及颗粒数量对鉴别良、恶性浆细胞具有一定临床意义,同时也证实了AgNOR法对了解MM中浆细胞增殖水平及预后是一个简单有效的参考指标。 相似文献