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排序方式: 共有128条查询结果,搜索用时 15 毫秒
71.
JOLLE KIRPENSTEIJN DVM MS Diplomate ACVS ROGER B. FINGLAND DVM MS Diplomate ACVS JOHN E. BOYER Jr. PhD GEORGE A. KENNEDY DVM PhD Diplomate ACVP ROBERT D. KLEMM PhD RICHARD M. DEBOWES dvm ms Diplomate acvs 《Veterinary surgery : VS》1993,22(6):464-472
Five centimeter segments of the linea alba in mature, female, mixed breed dogs were incised and then approximated with either stainless steel fascial staples or size 0 polypropylene suture material. Breaking strength of the linea alba closures was determined at 0 (Phase I, 18 dogs) and at 7,14, and 31 days (Phase II, 18 dogs). Histology and videointeractive planar morphometry were used to evaluate healing of the linea alba. Breaking strength and histologic and morphometric variables were analyzed statistically using analysis of variance in a split plot design. In a clinical trial, 20 cm linea alba incisions were approximated with stainless steel fascial staples after elective ovariohysterectomy in mature, female, mixed breed dogs (Phase III, eight dogs). The dogs were evaluated at 1, 2, 7,14, 31, 90, and 180 days. Linea alba incisions approximated with polypropylene suture material were significantly stronger than linea alba incisions approximated with stainless steel fascial staples on day 0. There was no significant difference between breaking strength values, histologic, and morphometric appearance of linea alba incisions closed with stainless steel fascial staples or polypropylene suture material when compared 7,14, and 31 days after surgery. All of the dogs in the clinical trial appeared to be normal at all evaluation times. Approximation of linea alba incisions with stainless steel fascial staples compares favorably to closure with a simple continuous pattern of polypropylene suture material with regard to breaking strength, clinical, histologic, and morphometric appearance. 相似文献
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The investigation was supported by the National Institutes of Health, General Research Support Grant FR 5465 Administered through the College of Veterinary Medicine, Washington State University. 相似文献
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我国北方部分稻区稻瘟病菌群体遗传结构研究 总被引:24,自引:1,他引:24
本文利用rep-PCR指纹分析方法研究了我国北方部分稻区稻瘟病菌的单元型(haplotype)和谱系(lineage)。根据单元型和谱系组成以及优势单元型和优势谱系的变化,分析了稻瘟病菌的群体结构和遗传变异性,证实了稻瘟病菌在DNA水平上是高度异质和极易变异的。对病原菌群体的时空变化分析发现,稻瘟病菌群体的单元型和谱系因年度和地区而不同。不同年度、不同地区的稻瘟病菌亚群体间几乎无共同的单元型和谱系。对138个供试菌株的致病型分析发现,单元型和谱系与致病型之间不存在规律性的对应关系,这说明用rep-PCR方法揭示的稻瘟病菌的遗传变异很可能与致病性变异不存在必然的联系。 相似文献
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ROBERT L. TOAL DVM MS MICHAEL A. WALKER DVM GEORGE A. HENRY DVM 《Veterinary radiology & ultrasound》1986,27(4):102-108
Fifty-five bitches were examined once, at different intervals for pregnancy. Manual Papation, B-mode real-time ultrasoungraphy, and radiography were used to confirm pregnancy and to count the number of fetuses present. Predicted numbers were compared to whelping data obtained from owners. Radiography was confined to the last trimester of pregnancy and had an overall accuracy of 100% in pregnancy detection and 93% in correct litter size determination. A proor qualtiy radiograph contributed to the one incorrect count estimate. Ultrasound and palpation were used in all three trimester phases starting 3 weeks post coitus. For pregnancy detection ultrasound was 94% accurate (no false positives) and palpation was 88% accurate (one false positive). For fetal counting, ultrasound was 36% accurate and palpation was 12% accurate. Recommendations for the use of ultrasound and radiography in pregnancy evaluation are reviewed. 相似文献
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