منابع مشابه
Thymic microenvironments, 3-D versus 2-D?
Lympho-stromal interactions in the thymus crucially de- termine the fate of developing T cells. Epithelial cells, inter- digitating reticular cells, macrophages and fibroblasts all play a role in the shaping of the T cell repertoire. Recently published evidence shows that lympho-stromal interaction acts bi-directional. Developing T cell themselves, at different stages of differentiation, contro...
متن کاملEngineering cancer microenvironments for in vitro 3-D tumor models
The natural microenvironment of tumors is composed of extracellular matrix (ECM), blood vasculature, and supporting stromal cells. The physical characteristics of ECM as well as the cellular components play a vital role in controlling cancer cell proliferation, apoptosis, metabolism, and differentiation. To mimic the tumor microenvironment outside the human body for drug testing, two-dimensiona...
متن کامل3 D Exploitation of 2 D Imagery
The invention of the digital camera is attributed to Eastman Kodak engineer Steven Sasson in 1975 [1]. Sasson’s device recorded 0.01-megapixel black-and-white pictures to cassette tapes. The first digital photograph required 23 seconds to generate and needed a television set to display [2]. Today, digital cameras recording greater than 10-megapixel color photos to Secure Digital (SD) cards with...
متن کاملPositioning evaluation of corrective osteotomy for the malunited radius: 3-D CT versus 2-D radiographs.
The authors retrospectively investigated the postoperative position of the distal radius after a corrective osteotomy using 2-dimensional (2-D) and 3-dimensional (3-D) imaging techniques to determine whether malposition correlates with clinical outcome. Twenty-five patients who underwent a corrective osteotomy were available for follow-up. The residual positioning errors of the distal end were ...
متن کاملPosterior tibial slope in medial opening-wedge high tibial osteotomy: 2-D versus 3-D navigation.
Although opening-wedge high tibial osteotomy (HTO) is used to correct deformities, it can simultaneously alter tibial slope in the sagittal plane because of the triangular configuration of the proximal tibia, and this undesired change in tibial slope can influence knee kinematics, stability, and joint contact pressure. Therefore, medial opening-wedge HTO is a technically demanding procedure des...
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ژورنال
عنوان ژورنال: Seminars in Immunology
سال: 1999
ISSN: 1044-5323
DOI: 10.1006/smim.1998.0158