This study reports on the cryostorage of embryogenic lines derived from selected mature Quercus robur trees, following application of the PVS2-vitrification based procedure. In seven oak genotypes, embryo recovery levels ranging from 57-92% were obtained when 4-6 mg embryo clumps were precultured for 3 days on 0.3 M sucrose basal medium, treated with PVS2 solution for 60 min at 24 degrees C, an...

Friable embryogenic tissue (FET) of oil palm was successfully cryopreserved by vitrification. After preconditioning the tissue on Murashige and Skoog (MS) medium supplemented with 0.25 M sucrose for 7 days, FET was dehydrated for 60 min at 0°C with a highly concentrated vitrification solution (PVS2) and plunged directly into liquid nitrogen gave the highest percentage of somatic embryo (SE) for...

The aim of the present study was to investigate the importance of the preculture conditions on the survival of apple (Malus domestica Borkh., cv. Romus4 and rootstock M106) shoot tips cryopreserved using a combined droplet vitrification procedure. Preculture was critical for the survival of apple shoot tips after cryopreservation. Among the different tested sugars and sugar alcohols (glucose, s...

conclusions stents would be regarded as a temporary means of reaching the ideal condition for resection and reconstruction in most patients with tracheal stenoses. although an optimal stent has not been introduced yet, we used polyflex stents in most of our patients with tracheal stenosis due to its availability and ease of use. we suggest that this method is safe and less time consuming than i...

We develop an approach to utilize anisotropic metamaterials to solve one of the fundamental problems of modern plasmonics--parasitic scattering of surface waves into free-space modes, opening the road to truly two-dimensional plasmonic optics. We illustrate the developed formalism on the examples of plasmonic refractor and plasmonic crystal, and discuss limitations of the developed technique an...

Abstract Atopic dermatitis (AD) is a chronic relapsing disease which causes characteristic eczematous skin lesions. The most common symptoms of atopic are persistent pruritus, xerosis, and lesions with typical location appearance that changes the patient’s age. prevalence in pediatric population estimated at 10% to 30%, while adults it ranges from 1% 3%. number people who suffer AD rising every...

BACKGROUND Basal cell carcinoma (BCC) is the most common cancer in the US population affecting approximately 2.8 million people per year. Basal cell carcinomas are usually slow-growing and rarely metastasize, but they do cause localized tissue destruction, compromised function, and cosmetic disfigurement. OBJECTIVE To provide clinicians with guidelines for the management of BCC based on evide...