introduction : heat shock proteins (hsps) are molecular chaperones involved in protein folding, stability and turnover, and due to their role in cancer progression, the effect of low power laser irradiation (lpli) on the expression of hsp70 and hsp90 in jurkat e6.1 t-lymphocyte leukemia (jelt) cell line was investigated in vitro. methods : jetl cells were irradiated with lpli at 635nm and 780m ...

background: vitrification has proven to be more effective than slow freezing methods to cryopreserve mammalian oocytes. the objectives of this study were to evaluate the effects of vitrification on immature and in vitro matured, denuded and cumulus compact goat oocytes and their subsequent fertilization. methods: oocytes were either cryopreserved as immature cumulus compact (imcc) (n=98 exp 1; ...

background: it is important to protect oocytes and embryos from oxidative stress in the culture medium. melatonin has been shown to be a direct free radical scavenger. objective: effect of melatonin during in vitro oocyte maturation, fertilization and embryo development of mouse oocytes was evaluated. materials and methods: oocytes from supper-ovulated mouse were divided to two groups: cumulus ...

The habituation of soybean (Glycine max) callus can be induced rapidly, by exposing the tissue to small amounts (10(-9)molar) of compounds including 2.4-dinitrophenol and phenoxyisobutyric acid for brief periods of time. Such compounds reportedly exhibit antiauxin activity. Various soybean callus phenotypes have been isolated which continue to exhibit hormone habituation 14 months following the...

results the results obtained for each drug were compared with other drugs and also with the results of the control groups. the results related to promastigote and amastigote assays showed that when the dose of both drugs increased, the parasite number is reduced in comparison with the control groups. moreover, the parasitic burden in the test cultures decreased significantly. macrophage assay r...

objective: to evaluate the efficacy of in vitro sperm activation (isa) using non-liquefied versus liquefied asthenozoospermic semen samples for improvement of sperm parameters. materials and methods: fifty six oligoasthenozoospermic (oa) patients (age range: 22-44 years; mean: 32.089 years) were enrolled in this study. oa patients were classified according to type of infertility. also, duration...