fixative salt

简明释义

定影剂

英英释义

例句

1.Using fixative salt 固定盐 in the preservation process can significantly extend the lifespan of the samples.

在保存过程中使用固定盐 fixative salt可以显著延长样本的使用寿命。

2.In the laboratory, we use fixative salt 固定盐 to preserve biological samples for analysis.

在实验室中，我们使用固定盐 fixative salt来保存生物样本以供分析。

3.The recipe for the new preservative includes fixative salt 固定盐 as a key ingredient.

新防腐剂的配方中包含固定盐 fixative salt作为关键成分。

4.Before shipping the specimens, we treated them with fixative salt 固定盐 to maintain their integrity.

在运输标本之前，我们用固定盐 fixative salt处理它们，以保持其完整性。

5.The artist added fixative salt 固定盐 to the paint to ensure that the colors would not fade over time.

艺术家在颜料中添加了固定盐 fixative salt，以确保颜色不会随着时间的推移而褪色。

作文

In the realm of chemistry and biology, the term fixative salt refers to a specific type of compound used in the preservation and stabilization of biological specimens. These salts play a crucial role in various laboratory techniques, particularly in histology and cytology, where the integrity of cellular structures must be maintained for accurate analysis. The use of fixative salt ensures that samples do not degrade or alter during the preparation process, allowing researchers to observe the natural state of cells and tissues under a microscope.The importance of fixative salt can be seen in its application in preparing tissue samples for microscopic examination. When a tissue sample is collected, it is often subjected to various processes that involve fixation, dehydration, and embedding. During the fixation phase, fixative salt is introduced to the sample to stabilize proteins and nucleic acids, effectively 'locking' them in place. This step is vital because any changes to the structure of these biomolecules could lead to misleading results in subsequent analyses.One common example of a fixative salt is formaldehyde, which is frequently used in the form of formalin. Formalin is a solution of formaldehyde gas dissolved in water, often containing methanol as a stabilizer. When tissues are immersed in formalin, the fixative salt reacts with the proteins, forming cross-links that preserve the tissue architecture. This reaction is essential for maintaining the morphology of the sample, making it easier to identify cellular components during microscopic examination.Another important aspect of fixative salt is its role in enhancing the contrast of cellular structures during staining procedures. After fixation, tissues are typically stained with various dyes to highlight specific features, such as nuclei or cytoplasmic components. The presence of fixative salt can improve the binding of these stains to the tissues, resulting in clearer and more distinguishable images under a microscope. This enhanced visibility is crucial for pathologists and researchers who rely on precise identification of cellular abnormalities.Furthermore, the choice of fixative salt can significantly impact the outcome of immunohistochemical staining, a technique used to detect specific proteins within tissues. Different fixative salts can either preserve or mask the antigenic sites on proteins, influencing the effectiveness of antibody binding. Therefore, selecting the appropriate fixative salt is essential for achieving reliable and reproducible results in immunohistochemistry.In conclusion, fixative salt is an indispensable component in the field of biological research and diagnostics. Its ability to preserve cellular structures, enhance staining quality, and facilitate accurate analysis makes it a vital tool for scientists and medical professionals alike. Understanding the role and function of fixative salt allows researchers to optimize their methodologies and ensure the integrity of their findings. As advancements in technology continue to evolve, the significance of fixative salt in biological studies will undoubtedly remain critical, paving the way for new discoveries and improved diagnostic techniques.

在化学和生物学领域，术语fixative salt指的是一种特定类型的化合物，用于生物标本的保存和稳定。这些盐在各种实验室技术中发挥着至关重要的作用，特别是在组织学和细胞学中，在这些领域中，必须保持细胞结构的完整性以进行准确分析。使用fixative salt可以确保样本在制备过程中不会降解或改变，从而允许研究人员观察细胞和组织在显微镜下的自然状态。fixative salt的重要性体现在其在准备组织样本进行显微镜检查中的应用。当收集到组织样本时，通常会经历包括固定、脱水和嵌入在内的各种过程。在固定阶段，将fixative salt引入样本中，以稳定蛋白质和核酸，有效地将它们“锁定”在原位。这一步骤至关重要，因为对这些生物分子结构的任何变化都可能导致后续分析结果的误导。一个常见的fixative salt示例是甲醛，它通常以福尔马林的形式使用。福尔马林是一种将甲醛气体溶解在水中的溶液，通常含有甲醇作为稳定剂。当组织浸入福尔马林中时，fixative salt与蛋白质发生反应，形成交联，保留组织的结构。这一反应对于保持样本的形态至关重要，使得在显微镜检查过程中更容易识别细胞成分。fixative salt的另一个重要方面是它在染色过程中的作用，可以增强细胞结构的对比度。在固定之后，组织通常会用各种染料进行染色，以突出特定特征，例如细胞核或细胞质成分。fixative salt的存在可以改善这些染料与组织的结合，导致在显微镜下更清晰、更易区分的图像。这种增强的可见性对于依赖于精确识别细胞异常的病理学家和研究人员至关重要。此外，fixative salt的选择可以显著影响免疫组织化学染色的结果，这是一种用于检测组织中特定蛋白质的技术。不同的fixative salts可以保留或遮蔽蛋白质上的抗原位点，从而影响抗体结合的有效性。因此，选择合适的fixative salt对于实现免疫组织化学中可靠和可重复的结果至关重要。总之，fixative salt是生物研究和诊断领域不可或缺的组成部分。它能够保留细胞结构、增强染色质量并促进准确分析，使其成为科学家和医疗专业人员的重要工具。理解fixative salt的作用和功能使研究人员能够优化他们的方法，并确保他们发现的完整性。随着技术的不断进步，fixative salt在生物研究中的重要性无疑将继续保持关键地位，为新的发现和改进的诊断技术铺平道路。