the morphology of the adults, egg, larva and pupa of anopheles persiensis linton, sedaghat & harbach, an iranian member of the holarctic maculipennis group, was studied and compared with the morphology of the closely related and sympatric a. maculipennis meigen. anopheles persiensis was formally recognized based on dna evidence and egg morphology. the fourth member of the group, anopheles persi...

during past few years, the cupressus arizonica has been abundantly planted in tehran, causing a significant increase of allergic diseases from the middle of winter to the beginning of spring. the aim of this study was the comparison of pollen protein content in two major varieties of c. arizonica planted in tehran, including c. arizonica var. arizonica and c. arizonica var. glabra , in order to...

synthesis, identification and thermal behavior studies of nanoparticles cobalt (ii) bromide has been studied in this research. cobalt (ii) bromide was synthesized by planetary high-energy ball mill. the general formula of this compound is cobr2.6h2o. the synthesized nanoparticles were characterized by fourier transform infrared spectroscopy and also size and structure of synthesized nanoparticl...

The function of the nuclear envelope in regulating the cellular distribution of proteins was studied by experimentally altering nuclear permeability and determining the effect of the procedure on the incorporation of exogenous and endogenous polypeptides into the nucleoplasm. Using fine glass needles, nuclear envelopes were disrupted by puncturing oocytes in that region of the animal pole occup...

Electron microscopy is a technology for examining the extremely fine detail or ultrastructure of biological specimens. This methodology opened a totally new vista to the human eyewhenbiological ultrastructurewas revealed as a dynamic and architecturally complex arrangement of macromolecules under the direction of genetic units termed genes. Complex subcomponents of the cell, termed organelles, ...

Electron microscopy uses high-energy elec tron beams to probe the structure and chem istry of both inorganic and biological materi als. The short wavelength (A) of electrons permits higher resolution images than light microscopes. This was a major motive in the early development of the transmission elec tron microscope (TEM) by Knoll and Ruska (1932) in Berlin, and atomic resolution is now rout...

THE well-deserved popularity of this book and the rapidly expanding nature of the subject has justified a third edition only four years after the second edition had been introduced. As in previous editions, each chapter consists of an introduction to the subject, practical details of the analytical methods and a comprehensive clinical interpretation. A completely new chapter on enzymes has been...