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1.
Dr. Ed. Formánek 《Plant Systematics and Evolution》1888,38(12):419-423
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Dr. Ed. Formánek 《Plant Systematics and Evolution》1888,38(6):186-190
Ohne Zusammenfassung 相似文献
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Dr. Ed. Formánek 《Plant Systematics and Evolution》1884,34(5):157-168
Ohne Zusammenfassung 相似文献
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Ed Echeverria 《Physiologia plantarum》1991,81(1):51-54
The sucrose content of acid lime [ Citrus aurantifolia (Christm.) Swing.] juice tissue was measured at time 0 and at various times following incubation at 15.5, 26.6 and 37.7°C. The decline in sucrose content in fruit stored at 15.5°C paralleled the expected values for a sucrose solution at pH 2.1. At higher temperatures, the in vivo sucrose content decreased at significantly lower rates than the expected values. In fruit stored at 26.6 and 37.7°C, the vacuolar pH increased 0.11 and 0.23 units, respectively. When sucrose hydrolysis was recalculated at the increased vacuolar pH of juice cells stored at 26.6 and 37.7°C, the calculated values were similar to the measured values obtained in vivo. It is concluded that within the limits of the experimental conditions, the rates of sucrose acid hydrolysis are regulated by changes in the vacuolar H+ concentration. 相似文献
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B Lasisz Z Zdrojewicz W Dul A Markiewicz J Strychalski 《Polski tygodnik lekarski (Warsaw, Poland : 1960)》1989,44(30-31):724-725
A case of a 32-year female patient with the systemic lupus erythematosus is presented. The patient was treated with prednisone in a daily dose of 40-60 mg. Due to the exacerbations of the symptoms and advanced renal disorders, the patient was given TFX together with corticotherapy. Thymus factor X is an extract of real thymus of immunorecorrective properties. It specifically acts on the lymphatic system, especially disordered mechanisms of both cellular and humoral immunity. Thymus factor X was given in the dose of 10 mg (one ampoule) i.m. for the three first months followed by one ampoule every three days for the next three months. The patient is given one ampoule of TFX once a week since the 6th months of therapy. Diminishment of the symptoms was observed. The patient is in remission since a one-year follow-up period. It was also possible to reduce the dose of prednisone to 15 mg a day. The patient is controlled every 3 months. Partial normalization of renal functioning and immunological mechanisms are seen. A decrease in antinuclear antibodies and immunoglobulins, normalization in complement components, an increase in T-cells percentage and conversion of the delayed skin reaction are noted. The authors conclude that TFX may be helpful in the treatment of the autoimmunological diseases, including the systemic lupus erythematosus. 相似文献
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PRODUCTION AND CHARACTERIZATION OF MULTIPLE-LAYERED POPULATIONS OF ANIMAL CELLS 总被引:11,自引:5,他引:6
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Dense populations containing 129 x 106 Jensen sarcoma, 134 x 106 DON Chinese hamster, 28.9 x 106 WI-38 human diploid, 61.8 x 106 HEp-2 human carcinoma, and 67.4 x 106 WISH human amnion cells were produced from dilute inocula, 0.85 to 5.33 x 106, in 7 to 8 days in a perfusion system using replicate T-60 flasks. Perfusion rates as high as 560 ml medium/day/T-60 were required to maintain pH (to ca ±0.1 unit) and adequate nutrient supplies. The cell densities encountered are described by the term "monolayer equivalents" (M.E.), defined as number of cells per culture divided by number of cells in a monolayer. The M.E.'s for T-60 cultures containing unusually dense populations of 40 x 106 WI-38 and 250 x 106 DON cells (9-day perfusion) were 5 and 17, respectively, and numbers of cells in illustrations of stained cross-sections of membranes from these cultures were in excellent agreement. Threshold M.E.'s exist below which proliferation is the chief cellular activity and above which one or more cell functions may predominate even though proliferation persists. Cellular nutrition and metabolism may change with changes in M.E., as illustrated in different patterns of glutamic acid, proline, and glycine utilization or production in dense vs. dilute WI-38 cell populations. The results indicated that the role of contact inhibition phenomena in arresting cellular proliferation was diminished in perfusion system environments. 相似文献
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