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Microbial Growth Measurement: Direct Methods01:23

Microbial Growth Measurement: Direct Methods

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Direct methods for measuring microbial populations in a culture are essential tools in microbiology, providing quantitative data for various applications. Among these, microscopic counts, plate counts, and serial dilution are widely used techniques, each with unique principles and applications.Microscopic CountsMicroscopic counting involves the use of a Petroff-Hausser chamber, a specialized microscope slide with a grid and defined depth. By observing a liquid culture under a microscope,...
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走向非侵入性的白细胞计数方法

Arutyun Bagramyan1,2, Juwell W Wu1, Kamdin Mirsanaye1

  • 1Center for Systems Biology and Wellman Center for Photomedicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.

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|March 2, 2026
PubMed
概括

一种新的非侵入性方法使用小型化显微镜对口腔粘膜进行白细胞计数 (WBCC) 的成像. 这项技术为免疫系统监测提供了比传统的抽血更安全,更容易获得的替代方案.

科学领域:

  • 生物医学工程 生物医学工程
  • 光学成像技术的成像
  • 免疫学 免疫学 免疫学

背景情况:

  • 目前的免疫系统监测依赖于侵入性血液抽取 (白细胞计数 - WBCC).
  • 抽血存在感染和贫血等风险,需要专门的资源.
  • 缺乏非侵入性的免疫状态评估方法.

研究的目的:

  • 开发和验证一种非侵入性,无标签的白细胞计数 (WBCC) 方法.
  • 为了能够实时评估免疫状态,而无需重复取血样.

主要方法:

  • 使用小型斜背照明显微镜 (mOBM) 进行人口粘膜成像.
  • 开发了一个用于无标签细胞检测和量化的分析管道.
  • 在34名健康人群的试点研究中验证了该系统.

主要成果:

  • 通过口腔粘膜成像成功检测和量化循环白细胞.
  • 基于图像的WBCC与标准实验室测量相关.
  • 证明了非侵入性WBCC的可行性.

结论:

  • mOBM系统为白细胞计数 (WBCC) 提供了一种非侵入性的方法.

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  • 这项技术可以促进实时监测各种临床环境中的免疫状况.
  • 为传统的血液采样提供了一个更安全,更容易获得的替代方案.