培植羊黄的扫描电镜观察

对培植羊黄进行了扫描电镜观察,并与培植牛黄,天然牛黄进行比较。三种黄的超微结构相似,分层明显,都具有丝网状结构,黄的基质部分为硫酸化多糖粘蛋白所构成。     

What is your diagnosis? Vertebral mass in a dog

Abstract: A 1‐year‐old, castrated male, mixed‐breed dog was presented for sporadic episodes of kyphosis, tremors, and vocalizing. On neurologic examination, the lesion was localized to spinal cord segments T3–L3. Magnetic resonance imaging of the spine showed an expansile mass occupying most of the ventral aspect of the spinous process of T6. Fine‐needle aspirates of the mass were examined cytologically. A moderately cellular population of pleomorphic spindle cells and abundant mucinous matrix were observed. The cytologic diagnosis was spindle cell neoplasia, with myxosarcoma and fibrosarcoma as the primary differential diagnoses. The dog was euthanized. Histopathologic evaluation of the mass and surrounding tissue confirmed a low‐grade spindle cell sarcoma, with severe compressive myelopathy and mild neutrophilic inflammation. The neoplastic cells stained positive for mucopolysaccharides with Alcian blue, resulting in a final diagnosis of low‐grade (grade 1) myxosarcoma. Fine‐needle aspiration was useful in making a preliminary diagnosis of myxosarcoma in this case. Myxosarcoma should be included in the differential diagnosis for a vertebral mass in a young dog.     

刺参不同部位中主要营养成分分析与评价

本文对刺参不同部位(体肇、肠和卵)中的主要营养成分进行了研究.结果表明:刺参属于高蛋白质食品,且肠和卵的蛋白质含量高于体壁;富含人体所必需的铜、铁、锰、锌等元素,这些元素更易在肠中富集;δ-维生素E在刺参中含量丰富,以肠中最高;体壁中酸性粘多糖含量较高,为5.03%;氨基酸组成全面,鲜昧氨基酸的含量丰富,体壁中羟脯氨酸含量很高,为4.20%,是动物胶原蛋白的主要成分;鉴定出23种脂肪酸,必需脂肪酸含量高,尤其C20:5 n3(EPA)在肠中高达16.06%.因此.刺参具有较高的营养价值和一定的药用价值.[动物营养学报,2010,22(1):212-220][中文全文见<动物营养学报>网站(www.china.JAN.com)中文版2010年22卷1期]     

鱼类黏液细胞研究进展

鱼体的黏液腺分布于其表皮层,黏液细胞分泌黏液保护机体免受伤害,是鱼体抵御病原微生物入侵的第一道防线。目前对于褐牙鲆(Paralichthys olivaceus)[1]、鲇鱼(Silurus asotus)[2]、花鲈(Lateolabrax maculatus)[3]、剑尾鱼(Xiphophorus maculatus)[4]、大鳞副泥鳅(Paramisgurnus dabryanus)[5]、黄颡鱼(Pelteobagrus fulvidraco)[6]、点带石斑鱼(Epinephelus malabaricus)[7]、鲤鱼(Cyrinus carpio)[8]等鱼类黏液细胞已有相关的研究报道。笔者总结了鱼类黏液细胞的研究进展,以期为更深入研究其结构和功能奠定基础,对鱼类养殖以及疾病预防产生重要的实践意义。     

Study on a Natural Health Drink : Dendrobium Nobile Juice

研究表明，利用铁皮石斛加工成保健饮料石斛汁，石斛生物碱及粘多糖提取率达９０％．石斛汁经毒理试验，结论是石斛汁的小鼠、大鼠急性经口毒性的半数致死量（ＬＤ５０）雌雄两性均大于１０ｇ／ｋｇ体重，按急性毒性分级标准，该样品属实际无毒类；Ａｍｅｓ试验，小鼠骨髓嗜多染细胞微核试验，小鼠精子畸形试验均为阴性．