plantlets grown in conventional tissue culture systems usually encounter physiological and anatomical abnormalities including inability to photosynthesize, low chlorophyll content, open stomata, lack of a cuticle layer in the leaf, abnormal xylem parenchyma etc. photoautotrophic and photomixotrophic systems could diminish these problems. the purpose of this study was to increase the chlorophyll...

The aim of the study was to test the hypothesis that glycation would influence thermal stability of bone tissue collagen. Bone samples were incubated in buffer or in ribose solution. Then, half of the ribosylated and half of the control samples were completely demineralized in formic acid. Differential scanning calorimetry was performed for temperatures from 40 °C to 220 °C in nitrogen atmosphe...

dianchi lake is one of the most three seriously eutrophic lakes in china. in the present study, the phosphorus (p) and nitrogen (n) fractions in 37 surface sediments samples collected in the dianchi lake were investigated. the total phophorus (tp) in sediments was divided into two parts: inorganic p (ip) and residual p (res-p). the results showed that the total phosphorus content in surface se...

It has been reported (1, 2) that the presence of certain lipids is essential to the in vitro demonstration of type-specific agglutination and precipitation by antipneumococcus sera. I t was suggested that the antibody of antipneumococcus serum might be a phosphatideglobulin complex, the nature of the lipid fraction being dependent upon the species derivation of the antibody. Because of the minu...

nitrite intoxication occurs frequently in ruminants and equines. the most common treatment of this disorder is administration of 1% methylene blue, although the use of some antioxidant agents e.g. vitamins and complementary treatment may also be useful. the aim of this study was to evaluate the in vitro antioxidative effects of some vitamins on methemoglobinemia induced by sodium nitrite. for t...

artemisinin and its derivatives are very important new class of antimalarial drugs. one of the most important artemisinin derivatives is artemether. the antiparasitic activity of artemether as a derivative of artemisinin is related to endoperoxide bridge in its structure. the aim of this study was the evaluation of antileishmanial effect of artemether, with more focus on its apoptotic effect. i...