Perspectives on the use of decellularized/devitalized and lyophilized human perinatal tissues for bone repair: Advantages and remaining challenges.

Human amniotic membrane (hAM) has been extensively used for several decades as a bioactive scaffold for regenerative medicine. In its cryopreserved form-one of the main storage formats-the presence of viable cells has often been questioned. Furthermore, there is little published evidence of the role of endogenous amniotic cells from cryopreserved hAM in tissue repair.

Clinical characteristics, management, and malignancy rate of oral lichen planus: A European multicenter study.

Introduction: Oral lichen planus (OLP) is a chronic inflammatory mucocutaneous condition that includes a spectrum of oral clinical manifestations ranging from mild painless white lesions to painful erosions and ulcers. The purpose of this European multicenter study is to describe the general characteristics of OLP lesions, the clinical and histopathological diagnosis, and the management of OLP at different European Oral Medicine and Maxillofacial Surgery centers, in order to minimize selections biases and provide information about the current trends in the treatment of OLP across Europe.

Materials And Methods: Data and histopathological records of patients with OLP were retrospectively revised and only those patients that fulfilled the diagnostic criteria from the 2016 position paper by American Academy of Oral and Maxillofacial Pathology were included.

Behavioral transition of a fish school in a crowded environment.

In open water, social fish gather to form schools, in which fish generally align with each other. In this work, we study how this social behavior evolves when perturbed by artificial obstacles. We measure the behavior of a group of zebrafish in the presence of a periodic array of pillars.

Nonlinear dielectric response in glass formers: Restoring forces and avoided spin-glass criticality.

Experimental measurements of nonlinear dielectric response in glass formers like supercooled glycerol or propylene carbonate have been interpreted as providing evidence for a growing thermodynamic length scale when lowering temperature. A heuristic picture based on coherently flipping "superdipoles" with disordered internal structure has been argued to capture the essence of the experimentally reported behavior, pointing to the key role of effectively disordered interactions in structural glasses. We test these ideas by devising an explicit one-dimensional model of interacting spins incorporating both the spin-glass spirit of the superdipole argument and the necessary long-time decorrelation of structural disorder, encoded here in a slow dynamics of the coupling constants.

Yielding Is an Absorbing Phase Transition with Vanishing Critical Fluctuations.

The yielding transition in athermal complex fluids can be interpreted as an absorbing phase transition between an elastic, absorbing state with high mesoscopic degeneracy and a flowing, active state. We characterize quantitatively this phase transition in an elastoplastic model under fixed applied shear stress, using a finite-size scaling analysis. We find vanishing critical fluctuations of the order parameter (i.