Patterned Disordered Cell Motion Ensures Vertebral Column Symmetry

Patterned Disordered Cell Motion Ensures Vertebral Column Symmetry.

The biomechanics of posterior embryonic growth must be dynamically regulated to ensure bilateral symmetry of the spinal column. Throughout vertebrate trunk elongation, motile mesodermal progenitors undergo an order-to-disorder transition via an epithelial-to-mesenchymal transition and sort symmetrically into the left and right paraxial mesoderm. We combine theoretical modeling of cell migration...

Hydatid Disease of Vertebral Column

A 30 years old male presented to us with history of back pain and weakness of both lower limbs for the last four months and was diagnosed by local orthopedic surgeon as a case of carries spine. He also used anti tuberculous drugs for two months but there was no improvement in his symptoms. We planned for transpedicular spinal biopsy. Biopsy report came to be non specific chronic inflammation. W...

Tumors of the vertebral column.

The clinical is, in most instances, non-specific. Pain is a common symptom, and may be spontaneous or be of a mechanical nature. It may simulate all the clinical syndromes of the degenarative spinal disorders, and thus it is not surprising that the correct diagnosis is often quite delayed. An expanding mass, which may reach considerable size is another manifestation. Finally as the tumor encroa...

Patterned and disordered continuous Abelian sandpile model.

We study critical properties of the continuous Abelian sandpile model with anisotropies in toppling rules that produce ordered patterns on it. Also, we consider the continuous directed sandpile model perturbed by a weak quenched randomness, study critical behavior of the model using perturbative conformal field theory, and show that the model has a random fixed point.

Modeling of Cell Motion on Patterned Adhesive and Deformable Substrates