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CXCR1 remodels the vascular niche to promote hematopoietic stem and progenitor cell engraftment
The microenvironment is an important regulator of hematopoietic stem and progenitor cell (HSPC) biology. Recent advances marking fluorescent HSPCs have allowed exquisite visualization of HSPCs in theExpand
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Fósiles de peces cíclidos del Mioceno y Pleistoceno de Costa Rica
We document fossils of cichlid fishes from Costa Rica, the first fossil record of cichlids in Central America. These fossils are from shallow marine strata of Late Miocene age at the ProyectoExpand
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RNA helicase DDX21 mediates nucleotide stress responses in neural crest and melanoma cells
The availability of nucleotides has a direct impact on transcription. The inhibition of dihydroorotate dehydrogenase (DHODH) with leflunomide impacts nucleotide pools by reducing pyrimidine levels.Expand
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Triassic turtle tracks and the origin of turtles
Abstract Turtle (Testudines) tracks, Chelonipus torquatus, reported from the early Middle Triassic (Anisian) of Germany, and Chelonipus isp. from the late Early Triassic (Spathian) of Wyoming andExpand
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LATE CRETACEOUS DINOSAUR BIOGEOGRAPHY AND ENDEMISM IN THE WESTERN INTERIOR BASIN, NORTH AMERICA: A CRITICAL RE-EVALUATION
North-south provinciality among Campanian and/or Maastrichtian vertebrates, especially dinosaurs, in the Western Interior basin of North America (specifically, between West Texas and southernExpand
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A simple method for inferring habitats of extinct turtles
Abstract We present a simple method of inferring extinct turtle habitats based on four measurements of the shell (two ratios). These ratios are the maximum width of the carapace to the width of theExpand
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BAENID (BAENIDAE: TESTUDINES) LOWER JAWS FROM THE LATE CRETACEOUS AND PALEOCENE OF THE SAN JUAN BASIN, NEW MEXICO
Two isolated lower jaws belonging to different baenid turtles are identified as cf. Boremys grandis from the upper Campanian (Late Cretaceous) Kirtland Formation (De-na-zin Member) and cf.Expand
Eocene North American Testudinidae and Geoemydidae (Reptilia, Testudines): A Re-Evaluation of Their Alpha Taxonomy, Ecology, and Origin
The alpha taxonomy and paleogeography of testudinid and geoemydid turtles of the early Eocene (Wasatchian-Bridgerian) of western North America have received little attention since their originalExpand
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