The papillary architecture in this tumor is more delicate and lacks foamy histiocytes . when closely packed , it can create near - solid appearance 本例肿瘤乳头状结构更加精致，缺乏泡沫样巨噬细胞，呈现近似于实性表现。
2.
An area of fibrinoid necrosis walled off by a cuff of histiocytes is seen in this prostate biopsy . this is most likely in response to a preious biopsy 下图中可见一纤维素样坏死区域被周围的组织细胞所包裹。这极可能是前列腺穿刺所导致的局部组织反应。
3.
Deep - sea microorganism has especial histiocyte system , metabolism and enzyme system in long - term evolution in deep - sea environment . and the microbial proteases are among the most important hydrolytic enzymes and have been studied extensively since the advent of enzymology 对这些独特的生理结构及机能进行研究，探讨深海生物适应特殊的生存环境而发生的基因变异无论在科学上还是实际开发应用上都具有重大的意义。
4.
Different from mammals , the early embryos of fish can not be preserved for the long period at the very low temperature ( - 196 ) . therefore , three methods were usually applied to cryogenic preservation of the fine and rare species of fish : 1 ) perserving fish spermatozoon in cryogenic condition . researchers have had systematically studied on this technique for many years , and this technique has been utilized in application and made a lot of effects ; 2 ) combining with the techniques of cell engineering ( nuclear transplantation and electric fusion etc . ) , and through the process of culturing histiocyte of fish , cryopreservation and re - culture after thawing , carrying out somatic cell breeding of fish . the past studies showed that the nucleolus of somatic cells of fish have totipotency 多年来，国内外学者对各种鱼类精液的冷冻保存进行了大量的系统研究，目前这项技术已达到实用水平，并日益发挥作用；二是对鱼类培养的组织细胞冷冻保存，通过鱼类细胞的培养、超低温冻存、解冻后再培养过程，结合细胞工程技术(如核移植、电融合等)进行体细胞育种；大量的研究结果表明鱼类体细胞核具有发育的全能性，随着细胞培养技术、细胞工程技术日益发展成熟，完全具备实现鱼类物种种质长期保存的理论基础和技术条件。
