lipid rich carcinoma is rare in dog and women and is characterized by cells that have an abundant foamy cytoplasm. a 10 year old, mix breed female dog suffered two subcutaneous masses in ventral abdomen was referred to surgery department of veterinary hospital of ahvaz shahid chamran university. surgical excision and microscopic examination of masses were done. after grading by elston and ellis...

We propose an alternative mechanism for intracellular cargo transport which results from motor-induced longitudinal fluctuations of cytoskeletal microtubules (MTs). The longitudinal fluctuations combined with transient cargo binding to the MTs lead to long-range transport even for cargos and vesicles having no molecular motors on them. The proposed transport mechanism, which we call “hitchhikin...

Although the role of macromolecular interactions in cell function has attracted considerable attention, important questions about the organization of cells remain. To help clarify this situation, we used a simple protocol that measures macromolecule release after gentle permeabilization for the examination of the status of endogenous macromolecules. Treatment of Chinese hamster ovary cells with...

The structural differences between  dormant and nondormant seeds of wild oats (Avena ludoviciana Durieu) were studied by light and transmission electron microscopy. Radial elongation of  scutellum epithelial cells were observed in nondormant seeds after imbibition, compared with dormant seeds in which cells were completely compressed. Ultrastructural differences for example, dilution of cytopla...

Today climate change threatens to reduce crop yield and harming the food security. Local landraces have adaptation skills shifting climatic conditions. Using of this local source in plant breeding programs becoming an alternative strategy. In study, 97 were collected initiate bulb onion program eligible for current trends. Collected materials morphologically characterized using 21 descriptors, ...