the use of quantum dots (qdots) as bright and photostable probes for long-term fluorescence imaging is gaining more interest. thus far, (pre)clinical use of qdots remains limited, which is primarily caused by the potential toxicity of qdots. most qdots consist of cd2+ ions, which are known to cause high levels of toxicity. therefore, the cytotoxic effects of cdse quantum dots on embryonic devel...

background: phytoestrogens are some plant compounds with estrogenic biological effects which are found in many nutritional sources as soybean, flaxseed and sesame. vitex agnus-castus, also called vitex, owns phytoestrogenic properties. studies have showed that phytoestrogens have different impacts on the gestation process and reproduction indices. the present study is aimed at investigating the...

reproductive abnormalities cause major losses of sheep production. abattoir materials were used todetermine the extent of reproductive wastage. reproductive tracts were collected from 524 ewes slaughtered at urmia slaughter-house in urmia, northwest of iran, during a period of 12 months. overall, 30.10% of the ewes examined were pregnant. a total of 149 (28.44%) tracts developed acquired reprod...

background people living with hiv (plhiv) are highly stigmatized and consequently hard-to-access by researchers and importantly, public health outreach in iran, possibly due to the existing socio-cultural situation in this country. the present study aimed to evaluate the sexual and reproductive health needs of plhiv in tehran, the capital of iran.   methods as a mixed-method descriptive study, ...

this study aims at investigating the effectiveness of utilizing barley as a flushing ration with an energizing source and soybean meal-based diets as a flushing ration with a protein source the sexual and breeding behaviors in ghezel sheep. to this end, 36 three and half-year old ewes (51±1.5 kilograms) with the record of giving birth to two lambs and 6 three-year old (89±2.5 kilograms) rams we...

this study investigated the effect of dietary supplementation with calcium salts of fatty acids using 48 afshari ewes randomly allocated to four treatments. all groups used in flushing period and only the source of energy were different between rations. the ewes were divided into four groups: a-barely grain; group b-received 5% of csfa with source of flaxseed oil (w3); group c-received 5% of cs...

The life table and consumption rate of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) reared on asparagus, Asparagus officinalis L. (Asparagales: Asparagaceae) were studied under laboratory conditions to assess their interaction. Development, survival, fecundity, and consumption data were analyzed by the age-stage, twosex life table. This study indicated that asparagus is a natural host...

Measuring hormone levels multiple times on the same individual across different life stages or treatments can facilitate our understanding of hormonal regulation of physiological and behavioral events. The conventional method of hormone measurement requires blood sampling, which is potentially lethal to small individuals. In fishes, there is an alternative non-invasive method of hormone measure...