Virginia were used. All these animals have similar micronuclei. During conjugation the pronuclei in the two conjugants are alike. Under such circumstances evidence of exchange of pronuclei was less convincing although there were many pairs in which an exchange evidently occurred. The migratory pronucleus was usually slender, the stationary pronucleus relatively short and broad. In many cases, t...

Reproductive characteristics are important for defining taxonomic groups of filamentous Zygnematophyceae, but they have not been fully observed in the genus Zygogonium. Specimens of Z. ericetorum previously studied and used to clarify the generic concept lacked fertile material, which was obtained recently. This study illustrates for the first time, using color light microscopic and fluorescenc...

A novel conductive DNA-based nanomaterial, DNA-peptide wire, composed of a DNA core and a peripheral peptide layer, is presented. The electrical conductivity of the wire is found to be at least three orders in magnitude higher than that of native double-stranded DNA (dsDNA). High conductivity of the wires along with a better resistance to mechanical deformations caused by interactions between t...

conjugation of methotrexate (mtx) (mw 454) with different molecular weights of polyethylene glycol (peg) including methoxy-peg (mpeg) 750 d and 5000 d and diol-peg 35000 d led to compounds that are physicochemically highly different from the parent compound, mtx. in this study, an hplc system consisting of c8 column and uv detector (?=342 nm), using a mixture of 30:70 v/v phosphate-citrate buff...

one of the useful indices in molecular topology is randić index. the alternative double bonds andconjugation in the polyene compounds are one of the main properties in these compounds. someof the molecular orbital and structural properties refer to this specialty, such as: molar absorptioncoefficient (εmax) , electrical conductivity and difference energy level of the homo and lumoorbitals, etc....

Conjugation of fluorophores to proteins is fundamental to several biotechnological applications and in the last decades boron-dipyrromethene (BODIPY) dyes started to be used in this field. BODIPYs are dipyrrin derivatives complexed to difluoroboryl that possesses several attractive photophysical properties. Herein we reviewed the synthetic methodologies published by academic and non-academic re...

If all space is occupied by a linear bianisotropic material — whether homogeneous or not — then the concurrent replacements of the permittivity and the impermeability tensors by the negatives of their respective complex conjugates and of the magnetoelectric tensors by their respective complex conjugates (in the Boys–Post representation) imply the conjugation of both E and H, in the absence of e...

Dithiomaleimides (DTMs) with alkyl substituents are shown to be a novel class of highly emissive fluorophores. Variable solubility and further functionalization can easily be tailored through the choice of N and S substituents. Inclusion of a DTM unit into a ROP/RAFT initiator or insertion into the disulfide bond of salmon calcitonin (sCT) demonstrates the utility for fluorescent labeling of po...

Phase-contrast microscope observations of the dimorphic fungus Phialophora dermatitidis revealed that thick-walled yeasts often tended to form aggregates and then to conjugate. Fusions were also observed among hyphae derived from the thick-walled yeasts.