منابع مشابه
Developmental evolution: This side of paradise
It has long been appreciated that the evolution of snakes involved the loss of limbs and axis elongation, but their developmental basis has been obscure. It has now been shown that alterations in the deployment of Hox genes and an early block in the formation of hindlimb primordia underpin these modifications.
متن کاملVisual perception: Sunny side up
Illumination, both natural and artificial, typically comes from above. Neurons in visual area V4--part of the object-processing pathway in the primate brain--may rely on this anisotropy to infer three-dimensional structure from shading cues.
متن کاملNatural killer cells: Right-side-up and up-side-down NK-cell receptors
Recent cDNA cloning of the receptors on human natural killer cells for MHC class I molecules reveals that human and mouse receptors have inverted structural orientations. Are there two distinct receptor systems?
متن کاملThe up side of a gas shortage
The up s ide of a gas shortage T he key to building strong bones and healthy joints is oxygen scarcity in the developing embryo. As Provot et al. show on page 451, a protein activated by low oxygen levels orchestrates the formation of limb bones and joints. The work demonstrates that one function of the protein is spurring differentiation of cartilage-constructing chondrocytes. An embryo acquir...
متن کاملEvaluating the efficacy and side effects fingolimod in 3 -year follow-up of patients in RRMS
Fingolimod is the first DMT drug to treat MS that oral form was available. This study was done with aim to study the effectiveness and long-term side effects of bio similar fingolimod oral forms in 3-year follow-up of patients with RRMS. Methods: This study was a clinical trial (before and after) on 28 patients with RRMS referring to Clinic of Imam Reza Hospital in Kermanshah. Patients r...
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ژورنال
عنوان ژورنال: The Journal of Thoracic and Cardiovascular Surgery
سال: 2019
ISSN: 0022-5223
DOI: 10.1016/j.jtcvs.2018.10.011