نتایج جستجو برای: no light perception
تعداد نتایج: 3717178 فیلتر نتایج به سال:
The transition from etiolated to green seedlings involves the conversion of etioplasts into mature chloroplasts via a multifaceted, light-driven process comprising multiple, tightly coordinated signaling networks. Here, we demonstrate that light-induced greening and chloroplast differentiation in tomato (Solanum lycopersicum) seedlings are mediated by an intricate cross talk among phytochromes,...
We are the first to present here the results of a pulsed ”light shining through a wall” experiment, specifically designed to test the PVLAS claims. Our pulsed approach allows us to measure very small conversion rates free from the inevitable false counts of photon detectors. We have not detected any regenerated photons, testing conversion and back conversion on a total of more than 4× 10 incide...
seen on color photography (Figure 2). Her visual acuity loss and fundus findings were attributed to choroidal infarction that occurred immediately postoperatively. A cerebral internal carotid artery angiogram performed 4 days postoperatively, once her proptosis resolved, revealed a surgical clip at the expected location and no evidence of a clip or obstruction at the level of the ophthalmic art...
Background: Use of human embryonic stem cells (hESCs) has been explored for treatment of cortical visual impairment (CVI) in children with cerebral palsy (CP). Objectives: The study evaluated efficacy and safety of hESC therapy in 40 CP children with CVI. Methods: The study had four treatment phases (T1, T2, T3, and T4) separated by gap phases. Patients were evaluated for visual impairment usin...
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