Rhamnolipids extracted from Pseudomonas aeruginosa strain JS-11 were utilized for synthesis of stable silver nanoparticles (Rh-AgNPs). The Rh-AgNPs (23 nm) were characterized by Fourier transform infra-red (FTIR) spectroscopy, atomic force microscopy (AFM) and transmission electron microscopy (TEM). The cytotoxicity assays suggested significant decrease in viability of Rh-AgNPs treated human breast adenocarcinoma (MCF-7) cells, compared with normal human peripheral blood mononuclear (PBMN) cells.

Streptococcus mitis from the oral cavity causes endocarditis and other systemic infections. Rising resistance against traditional antibiotics amongst oral bacteria further aggravates the problem. Therefore, antimicrobial and antibiofilm activities of zinc oxide and titanium dioxide nanoparticles (NPs) synthesized and characterized during this study against S. mitis ATCC 6249 and Ora-20 were evaluated in search of alternative antimicrobial agents. ZnO and TiO2-NPs exhibited an average size of 35 and 13 nm, respectively. The IC50 values of ZnO and TiO2-NPs against S.

Abstract Diplometopon zarudnyi, a worm lizard belongs to amphisbaenia under trogonophidae
family. This species exists in limited areas of the Arabian Peninsula and is an oscillating digger
found in sub-surface soils. The present study aimed to investigate the sperm tail differentiation
in D. zarudnyi. Ten male adults of D. zarudnyi were collected from Riyadh during April–May
2011. To study the sperm tail at the ultrastructural level the testes were fixed in 3% glutaraldehyde,

A simple and rapid microwave assisted method of green synthesis of silver nanoparticles (AgNPs) was developed using aqueous leaf extract of Eucalyptus globulus(ELE), and their antibacterial and antibiofilm potential investigated. With this aim, the aqueous solutions of ELE and AgNO3(1 mM) were mixed (1:4 v/v), and microwave irradiated at 2450 Mhz, for 30 sec. The instant color change of the ELE-AgNO3 mixture from pale yellow to dark brown indicated ELE-AgNPs synthesis.

Purpose: The development of small field of view (SFOV) gamma cameras for intraoperative imaging is an expanding area of research. Combining gamma and optical imaging in a co-aligned configuration is a new concept that could provide high spatial resolution imaging and enhance localisation during critical surgical procedures such as in head and neck biopsies.