作者：Haridy, Yara; Norris, Sam C. P.; Fabbri, Matteo; Nanglu, Karma; Sharma, Neelima; Miller, James F.; Rivers, Mark; La Riviere, Patrick; Vargas, Phillip; Ortega-Hernandez, Javier; Shubin, Neil H.
作者单位：University of Chicago; Johns Hopkins University; Harvard University; University of Toronto; University of California System; University of California Riverside; Missouri State University; University of Chicago; University of Chicago
摘要：The earliest record of tooth antecedents and the tissue dentine1,2, an early-vertebrate novelty, has been controversially represented by fragmentary Cambrian fossils identified as Anatolepis heintzi3, 4-5. Anatolepis exoskeletons have the characteristic tubules of dentine that prompted their interpretation as the first precursors of teeth3, known as odontodes. Debates over whether Anatolepis is a legitimate vertebrate6, 7-8 have arisen because of limitations in imaging and the lack of comparat...
作者：Jann, Johann-Christoph; Tothova, Zuzana
作者单位：Harvard University; Harvard University Medical Affiliates; Dana-Farber Cancer Institute; Harvard University; Harvard Medical School; Harvard University; Massachusetts Institute of Technology (MIT); Broad Institute
摘要：The risk of developing blood cancer increases with age. The finding that a molecule from gut bacteria plays a part points to new ways to intervene.
作者：Asrar, Farhan M.
作者单位：University of Toronto; Toronto Metropolitan University
