نتایج جستجو برای: tris citrate medium
تعداد نتایج: 260916 فیلتر نتایج به سال:
The aim of the study was to find out effect adding nanocitrate Mn, Zn and Cu diluent for ram spermatozoa cryopreservation on its quality ability fertilizing. experiment carried six clinically healthy breeder 2–4-year-old rams Texel breed. received ejaculates were evaluated volume, sperm concentration motility then divided into control experimental groups. Control samples diluted with lactose-yo...
The survivability of caprine spermatozoa was compared in semen extenders prepared from the conventional egg-yolk citrate and goat-milk citrate. Motility was comparable in both sets of extenders during the first 24 hours post-extension when extended ejaculates were stored at either room temperature (28 O C) or refrigerator temperature (5 O C). Motility in goat milk citrate extenders at 5 O C was...
It was shown that feuB mutants (defective in ferric enterochelin uptake) were unable to adsorb colicin B. In addition, they were missing one of the three outer-membrane proteins which are over produced in strains grown in iron-deficient, extracted medium. Thus this protein (the feuB protein) is probably the receptor for colicin B and functions in enterochelin-mediated iron transport. The feuB g...
Acidification of the suspending medium of corn mitochondria (Zea mays L., WF9 x Mo17) from pH 7.5 to pH 6.8 to 6.4 initiates osmotic swelling with the transportable anions citrate, sulfate, and phosphate. Swelling becomes pronounced with a combination of citrate plus sulfate or phosphate. Acidification proves to activate endogenous respiration, which is essentially zero at pH 7.5. The endogenou...
The superior ability of citrate excretion in a carrot (Daucus carota L.) mutant cell line, namely IPG (insoluble phosphate grower) [Takita et al. (1999a) Plant Cell Physiol. 40: 489] cells has been characterized in terms of citrate transport at the plasma membrane. IPG cells released about a 20-fold increase in citrate in comparison with malate, while the concentration of malate was only 35% lo...
A large variety of lactic acid bacteria (LAB) can utilize citrate under fermentative conditions. Although much information concerning the metabolic pathways leading to citrate utilization by LAB has been gathered, the mechanisms regulating these pathways are obscure. In Weissella paramesenteroides (formerly called Leuconostoc paramesenteroides), transcription of the citMDEFCGRP citrate operon a...
Natural bone apatite crystals, which mediate the development and regulate the load-bearing function of bone, have recently been associated with strongly bound citrate molecules. However, such understanding has not been translated into bone biomaterial design and osteoblast cell culture. In this work, we have developed a new class of biodegradable, mechanically strong, and biocompatible citrate-...
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