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Introduction: Of the many previous hypotheses concerning the origin of Phobos' grooves, most authorities agree that their formation is in some way connected with the creation of Stickney crater, at nearly 10 km diameter the largest crater on Phobos [1,2,3]. The principal argument for the Stick-ney association has been that the grooves form a pattern that is(More)
Introduction: Cassini's Imaging Science Subsystem (ISS) coverage obtained to date shows that the Sat-urnian moon Enceladus has evolved through a long and complex tectonic history[1]. The most recent episodes of major tectonic activity are identified by a peculiar hemispheric pattern of fractures and lineations that exhibit a remarkable symmetry relative to(More)
Histological sections of methacrylate-embedded bone marrow biopsies allow exact evaluation and classification of the cellular marrow components. We describe a simple method for preparation of sections of aspirated bone marrow particles following embedment in methacrylate. Comparison of histological sections from marrow particles and marrow biopsies(More)
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