摘要:
This invention is directed to means for inhibiting the apparent shift in the buoyant density of and/or to restore any loss in the buoyant density of the granulocytic white blood cells in a sample of blood, thereby insuring the quality of the separation of lymphocytes and monocytes from granulocytes in a blood sample. The invention comprises contacting a blood sample with a hypertonic fluid containing a low molecular weight organic or inorganic ionic substance and/or with an isotonic or hypertonic fluid containing a high molecular weight organic substance which may contain organic molecules having a lipophilic substituent in their structures and/or with a culture medium for blood cells. An integral part of the invention is an improved blood separation tube utilizing a gel-like substance having a specific gravity between 1.060-1.065 g/cm.sup.3 to significantly enhance the purity of cell separation, while providing acceptable cell yields.
摘要翻译:本发明涉及用于抑制浮力密度的明显变化和/或恢复血液样品中粒细胞白细胞的浮力密度的任何损失的手段,从而确保淋巴细胞和单核细胞分离的质量 来自血液样品中的粒细胞。 本发明包括使血液样品与含有低分子量有机或无机离子物质的高渗流体和/或含有高分子量有机物质的等渗或高渗流体接触,所述高分子量或高渗流体可以含有在其结构中具有亲脂性取代基的有机分子, /或用于血细胞的培养基。 本发明的一个组成部分是利用比重在1.060-1.065g / cm 3之间的凝胶状物质的改进的血液分离管,以显着提高细胞分离的纯度,同时提供可接受的细胞产量。
摘要:
A collection device for plasma preparation for diagnostic assays. The device comprises a spray-dried anticoagulant formulation on the interior surface of the device and a thixotropic polymeric gel. The device is an improvement over commercially available devices which contain liquid anticoagulant formulations, for use in nucleic acid testing that employ amplifications technologies including, but not limited to, polymerase chain reaction (PCR), branched DNA (bDNA) and nucleic acid sequenced based amplification (NASBA).
摘要:
An anticoagulant solution of sodium citrate for use in blood chemistry-related techniques and apparatus is disclosed. The anticoagulant solution should include an effective concentration of sodium citrate sufficient for preventing the coagulation of a sample of blood employed in the technique or added to the apparatus. The sodium citrate-based anticoagulant solution should have a pH ranging from above 6.0 to about 8.5 and a sodium citrate concentration preferably ranging from about 0.05M to about 0.2M.