Objective:  To identify etiologic microbiota associated periodontal diseases among diabetes patients and the factors related to most commonly identified bacteria species .  Material Methods:  Periodontal plaque samples from 11 diabetic participants 13 non-diabetic controls were collected assess their aerobic anaerobic bacterial growth. Different distinct colonies by microscopic 16srDNA sequenci...

In this study, cDNA encoding the Camelus dromedarius lactoferrin (cLf) was isolated from mammary gland by reverse transcription polymerase chain reaction and cloned to the pART27 expression vector. Its predicted amino acid sequence was analyzed and compared with lactoferrin of other mammalian species. Secondary and tertiary structures were predicted and modeled by online tools. Then cLf cDNA wa...

Adult epicuticular hydrocarbon variation of 14 geographically isolated populations of cactophilic Drosophila mojavensis was assessed to further investigate mechanisms of sexual isolation. Hydrocarbon transfer experiments demonstrated that these compounds are part of the mate recognition system in this species. Sixteen of the 23 epicuticular hydrocarbon components studied differed in amounts bet...

Divergence in host adaptive traits has been well studied from an ecological and evolutionary perspective, but identification of the proximate mechanisms underlying such divergence is less well understood. Behavioral preferences for host plants are often mediated by olfaction and shifts in preference may be accompanied by changes in the olfactory system. In this study, we examine the evolution o...

A method that allows the measure of molecular weight of two well-known and closely related esterases from Drosophila mojavensis and its sibling species, D. arizonae, is here described, using native polyacrylamide gel electrophoresis at several concentrations, applying Fergunson ́s principles. These enzymes, namely EST-4 and EST5, presented molecular weight values between 81 and 91 kDa. In spite ...

Models of speciation-with-gene-flow have shown that the reduction in recombination between alternative chromosome arrangements can facilitate the fixation of locally adaptive genes in the face of gene flow and contribute to speciation. However, it has proven frustratingly difficult to show empirically that inversions have reduced gene flow and arose during or shortly after the onset of species ...