Immunoelectron microscopic study of proteoglycans in rat epiphyseal growth plate cartilage after fixation with ruthenium hexamine trichloride (RHT)
Tóm tắt
The localization of proteoglycans in rat epiphyseal growth plate cartilage was investigated immunoelectron microscopically by the post-embedding method, using mouse monoclonal antibody (2-B-6) which specifically recognizes 4-sulphated chondroitin or dermatan sulphate after digestion of proteoglycans with chondroitinase ABC. Fixation with ruthenium hexamine trichloride (RHT) and embedding in LR White served to preserve chondrocytes in the expanded state and matrix proteoglycans were observed as a reticular network of filaments. Immunoelectron microscopy revealed gold labelling of the secondary antibodies for the demonstration of proteoglycans on these filamentous structures and in elements of the Golgi apparatus. Filaments associated with matrix vesicles were also labelled. After fixation in the presence of RHT, it was clearly demonstrated that cartilage matrix proteoglycans are retained approximately in their original spatial distribution and their antigenicity is well preserved.
Tài liệu tham khảo
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