BACKGROUND Some Iranian pilgrims are referred to Iran because of catching a new disease or exacerbation of their disease during the Hajj ceremony. These diseases need prolonged and specialized treatments. Investigation of the reasons led to their return to Iran is useful and effective in policy-making and planning of preventive health services. OBJECTIVES This study aimed to investigate the c...

Cell surface carbohydrates, detected by fluorescein isothiocyanate/concanavalin A (FITC-ConA), were identified at four locations on gametes of Chlamydomonas reinhardtii. (1) The cell wall: uniform labelling with FITC-ConA was observed; a substantial number of sites were localized in the sodium dodecyl sulphate-insoluble inner wall, which contains the flagellar collars. (2) The periplasm: a cres...

The relationship between sexual selection and extinction risk has rarely been investigated. This is unfortunate because extinction plays a key role in determining the patterns of species richness seen in extant clades, which form the basis of comparative studies into the role that sexual selection may play in promoting speciation. We investigate the extent to which the perceived risk of extinct...

The yeast Candida albicans can mate. However, in the natural environment mating may generate progeny (fusants) fitter than clonal lineages too rarely to render mating biologically significant: C. albicans has never been observed to mate in its natural environment, the human host, and the population structure of the species is largely clonal. It seems incapable of meiosis, and most isolates are ...

G E N E T I C analyses of the controlling systems for homothallism uersus heterothallism in Saccharomyces revealed several striking features, i.e., the epistatic effect of a homothallic gene in relation to the heterothallic mating type alleles ( WINGE and ROBERTS 1949), the complementary interaction of homothallic genes ( TAKAHASHI 1958) and the mating type allele-specific conversion of heterot...

Mating has been shown in many species to provoke the release of oxytocin (OT). In our study, various stimuli were applied to mares to study release of OT and prostaglandin F(2alpha) (PGF(2alpha)) associated with mating. Blood samples were collected from mares around the time of teasing both in oestrus and dioestrus and at mating. For comparison, blood samples were also collected at the time of ...

2011’de Esad rejimine karşı çıkan halk ayaklanması sonucunda Suriye krizi ortaya çıkmıştır. Kriz sonrası birçok uluslararası ilişki yeniden şekillenmiştir. Bu ilişkilerin en önemlisi de İran ve Rusya ilişkileridir. çalışmada ilişiklerinin şekillenmesine Türkiye İsrail gibi krizinden etkilenen diğer bölgesel güçlerin ittifakını nasıl etkilediği incelenecektir.
 İki ülke ortak hedefler çerçe...

The effect of temperature on male sexual displays is well documented but its role in mediating the differential mating success of males is less well established. Male sagebrush crickets Cyphoderris strepitans Morris and Gwynne occur in high-elevation sagebrush meadows in mountainous areas of the western U.S.A., and often are observed singing at temperatures as low −8 to −4 °C to attract sexuall...

the aim of this study was to design the base breeding plan in sistani cattle by using of stochastic simulation. for this purpose, three population size (500, 1000, 2000 heads), three levels of herd number (5, 10, 20), two levels of selection intensity (high and low) and two levels of mating method (random and minimum co-ancestry) were combined together and in total 36 scenarios were compared fo...