No abstract in English

Objectives: To demonstrate the three-dimensional structure of the collagen fiber framework in the human liver ligaments and capsule. Methods: We studied the collagen fiber framework of relatively normal human liver specimens using a cell maceration method and scanning electron microscopy. Results: The collagen fibers of the hepatic falciform ligament subdivided into three types depending on the direction and location. The outer collagen fibers of the hepatic teres ligament formed the longitudinal plate, and the inner fibers had a loop-like structure. The coronary ligament contained two parallel collagen bundles toward the hepatic capsule. The hepatic capsule possesses the outer thicker and inner interlaced layers of the collagen fibers. The hepatic ligaments' outer layer connected with the hepatic capsule collagen fibers, while the inner layer tended to merge with the hepatic lobular parenchyma's connective tissue. Conclusions:The hepatic ligaments and liver capsule are layered structures of collagen fibers differing in direction. The hepatic ligaments' outer layer connected with the liver capsule's collagen fibers and the inner layer merged with the hepatic lobular parenchyma's connective tissue.

Objectives:We aimed to study the melanocyte and melanin granules of the blue spot skin. Methods: The skin specimens were taken from the sacral region of a 1 and an 8 month old child and a 35 year old man. We proceeded to examine the melanocytes of the blue spot and non-blue spot regions by light and transmission electron microscope analysis. Results: TThe melanocytes of the sacral skin of the adult man were found on the epidermal side of the epidermal-dermal junction. The cytoplasm of the melanocyte contained melanin granules of the dense type. The melanocytes of the blue spot skin of the 1 and 8 months old children were found at the uniformly thin basal membrane of the epidermis. The cytoplasm of these melanocytes contained melanin granules of both light and dense types. There were distinct differences in the thickness of the basal membrane, and in the size and composition of the melanin granules. Conclusion: Melanocytes of the sacral blue spot region were located on the basal membrane of the epidermis near to the epidermal-dermal junction. The cytoplasm of the melanocytes contained melanin granules of both dense and light types.