Shankar N. Acharya

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A direct somatic embryogenesis and secondary embryogenesis protocol was developed for seven cereal species, thus providing a new vista for in vitro plant genetic transformation or propagation. This paper describes a novel process that has been successfully developed for efficient regeneration of a wide range of cereal species and genotypes. This tissue(More)
1Agriculture and Agri-Food Canada Research Centre, 107 Science Place, Saskatoon, Saskatchewan, Canada S7N 0X2; 2Agriculture and Agri-Food Canada Range Research Unit, Kamloops, British Columbia, Canada V0H 1Z0; 3Agriculture and Agri-Food Canada Research Centre, Lethrbridge, Alberta, Canada T1J 4B1; 4Alberta Department of Agriculture and Agri-Food;(More)
1Alberta Agriculture, Food and Rural Development, Lethbridge, Alberta, Canada T1J 4V6 (e-mail:; 2Agriculture and Agri-Food Canada, Range Research Unit, Kamloops, British Columbia, Canada V2B 8A9; 3Research Centre, Lethbridge, Alberta, Canada T1J 4B1; 4Agriculture and Agri-Food Canada, Pacific Agri-Food Research Centre, Summerland,(More)
STUDY DESIGN An international, multicenter cross-sectional image-based study performed in 33 institutions in the Asia Pacific region. OBJECTIVE The study addressed the role of facet joint angulation and tropism in relation to L4-L5 degenerative spondylolisthesis (DS). METHODS The study included 349 patients (63% females; mean age: 61.8 years) with(More)
This is a prospective non-randomized observation study done on 33 patients with uncomplicated spinal tuberculosis to observe the imaging characteristics on sequential F-18 FDG PET CT scans. 33 consecutive patients with pathologically proven spinal tuberculosis underwent a baseline contrast-enhanced whole body FDG PET scan before initiation of antitubercular(More)
Study Design A multinational, multiethnic, cross-sectional image-based study was performed in 33 institutions, representing 10 countries, which were part of the AOSpine Asia Pacific Research Collaboration Consortium. Objective Lumbar facet joint orientation has been reported to be associated with the development of degenerative spondylolisthesis (DS). The(More)
Cervical disc prolapse has been traditionally treated with anterior discectomy and fusion, with good results; however autogenous bone graft and instrumentation remain a limiting factor. To avoid this, a stand-alone cage with bone marrow soaked tricalcium phosphate was used for single level cervical disc disease. Fifteen consecutive patients with single(More)
STUDY DESIGN Prospective, comparative study of neurologic outcome in patients with posterior extradural cord compression. OBJECTIVE To compare the results of surgical decompression in patients presenting with neurologic deficit due to posterior element tuberculosis with those due to other causes. SUMMARY OF BACKGROUND DATA Posterior cord compression is(More)
BACKGROUND Facet joint tropism is asymmetry in orientation of the bilateral facets. Some studies have shown that tropism may increase the risk of disc degeneration and herniations, as well as degenerative spondylolisthesis (DS). It remains controversial whether tropism is a pre-existing developmental phenomena or secondary to progressive remodeling of the(More)